CVE-2026-20031 (GCVE-0-2026-20031)
Vulnerability from cvelistv5
Published
2026-03-04 17:17
Modified
2026-03-05 15:52
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-248 - Uncaught Exception
Summary
A vulnerability in the HTML Cascading Style Sheets (CSS) module of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to improper error handling when splitting UTF-8 strings. An attacker could exploit this vulnerability by submitting a crafted HTML file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the scanning process.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | Cisco Secure Endpoint |
Version: 7.0.5 Version: 6.2.19 Version: 7.3.3 Version: 7.2.13 Version: 6.1.5 Version: 6.3.1 Version: 6.2.5 Version: 7.3.5 Version: 6.2.1 Version: 7.2.7 Version: 7.1.1 Version: 6.3.5 Version: 6.2.9 Version: 7.3.1 Version: 6.1.7 Version: 7.2.11 Version: 7.2.3 Version: 7.1.5 Version: 6.3.3 Version: 7.3.9 Version: 6.2.3 Version: 6.1.9 Version: 6.0.9 Version: 7.2.5 Version: 6.0.7 Version: 6.3.7 Version: 1.12.3 Version: 1.8.0 Version: 1.11.1 Version: 1.12.4 Version: 1.10.0 Version: 1.12.0 Version: 1.8.1 Version: 1.10.1 Version: 1.12.1 Version: 1.12.6 Version: 1.14.0 Version: 1.10.2 Version: 1.12.7 Version: 1.12.2 Version: 1.6.0 Version: 1.9.0 Version: 1.11.0 Version: 1.7.0 Version: 1.13.0 Version: 1.8.4 Version: 1.13.1 Version: 1.9.1 Version: 1.12.5 Version: 1.13.2 Version: 2.0.2 Version: 1.1.0 Version: 2.0.0 Version: 2.0.1 Version: 8.1.7.21512 Version: 8.1.7 Version: 8.1.5 Version: 8.1.3.21242 Version: 8.1.3 Version: 8.1.5.21322 Version: 8.1.7.21417 Version: 2.1.0.14 Version: 2.2.0 Version: 2.3.0 Version: 2.4.0 Version: 2.5.0 Version: 2.6.0 Version: 2.7.0 Version: 2.8.0 Version: 2.9.0 Version: 2.10.0 Version: 2.10.1 Version: 2.11.0 Version: 1.14.1 Version: 1.15.1 Version: 1.15.2 Version: 1.15.3 Version: 1.15.4 Version: 1.15.5 Version: 1.15.6 Version: 1.16.0 Version: 1.16.1 Version: 1.16.2 Version: 1.16.3 Version: 1.18.0 Version: 1.18.1 Version: 1.20.0 Version: 1.21.0 Version: 1.21.1 Version: 1.21.2 Version: 1.21.3 Version: 1.22.0 Version: 1.22.1 Version: 1.22.2 Version: 1.22.3 Version: 1.22.4 Version: 1.24.0 Version: 1.24.1 Version: 1.24.2 Version: 1.24.3 Version: 1.24.4 Version: 1.26.0 Version: 1.24.5 Version: 1.26.1 Version: 1.27.0 Version: 1.15.0 Version: 1.17.0 Version: 1.17.1 Version: 1.17.2 Version: 1.19.0 Version: 1.20.1 Version: 1.20.2 Version: 1.20.3 Version: 1.20.4 Version: 1.20.5 Version: 1.20.6 Version: 1.23.0 Version: 1.23.1 Version: 1.20.7 Version: 1.20.8 Version: 1.25.0 Version: 1.25.1 Version: 1.25.2 Version: 1.27.1 Version: 1.27.2 Version: 7.3.13 Version: 7.3.15 Version: 7.4.1 Version: 7.4.1.20425 Version: 7.4.1.20439 Version: 7.4.3 Version: 7.4.3.20679 Version: 7.4.5 Version: 7.5.1.20813 Version: 7.5.1.20833 Version: 7.5.3 Version: 7.5.5 Version: 8.0.1.21160 Version: 8.0.1.21164 Version: 7.5.7 Version: 7.5.9 Version: 7.5.11 Version: 8.1.7.21585 Version: 7.5.13.21586 Version: 7.5.13.21598 Version: 8.2.1.21612 Version: 8.2.1.21650 Version: 7.5.15.21611 Version: 7.5.17.21680 Version: 8.2.3.30119 Version: 8.2.4.30130 Version: 8.4.0 Version: 7.5.19 Version: 8.4.1.30298 Version: 8.4.2.30317 Version: 8.4.1.30307 Version: 7.5.20 Version: 8.4.3 Version: 8.4.4.30419 Version: 8.4.4.30467 Version: 7.5.21.21732 Version: 8.4.5.30483 |
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"value": "A vulnerability in the HTML Cascading Style Sheets (CSS) module of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to improper error handling when splitting UTF-8 strings. An attacker could exploit this vulnerability by submitting a crafted HTML file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the scanning process."
}
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"exploits": [
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"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
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\"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"Cisco\", \"product\": \"Cisco Secure Endpoint\", \"versions\": [{\"status\": \"affected\", \"version\": \"7.0.5\"}, {\"status\": \"affected\", \"version\": \"6.2.19\"}, {\"status\": \"affected\", \"version\": \"7.3.3\"}, {\"status\": \"affected\", \"version\": \"7.2.13\"}, {\"status\": \"affected\", \"version\": \"6.1.5\"}, {\"status\": \"affected\", \"version\": \"6.3.1\"}, {\"status\": \"affected\", \"version\": \"6.2.5\"}, {\"status\": \"affected\", \"version\": \"7.3.5\"}, {\"status\": \"affected\", \"version\": \"6.2.1\"}, {\"status\": \"affected\", \"version\": \"7.2.7\"}, {\"status\": \"affected\", \"version\": \"7.1.1\"}, {\"status\": \"affected\", \"version\": \"6.3.5\"}, {\"status\": \"affected\", \"version\": \"6.2.9\"}, {\"status\": \"affected\", \"version\": \"7.3.1\"}, {\"status\": \"affected\", \"version\": \"6.1.7\"}, {\"status\": \"affected\", \"version\": \"7.2.11\"}, {\"status\": \"affected\", \"version\": \"7.2.3\"}, {\"status\": \"affected\", \"version\": \"7.1.5\"}, {\"status\": \"affected\", \"version\": \"6.3.3\"}, {\"status\": \"affected\", \"version\": \"7.3.9\"}, {\"status\": \"affected\", \"version\": \"6.2.3\"}, {\"status\": \"affected\", \"version\": \"6.1.9\"}, {\"status\": \"affected\", \"version\": \"6.0.9\"}, {\"status\": \"affected\", \"version\": \"7.2.5\"}, {\"status\": \"affected\", \"version\": \"6.0.7\"}, {\"status\": \"affected\", \"version\": \"6.3.7\"}, {\"status\": \"affected\", \"version\": \"1.12.3\"}, {\"status\": \"affected\", \"version\": \"1.8.0\"}, {\"status\": \"affected\", \"version\": \"1.11.1\"}, {\"status\": \"affected\", \"version\": \"1.12.4\"}, {\"status\": \"affected\", \"version\": \"1.10.0\"}, {\"status\": \"affected\", \"version\": \"1.12.0\"}, {\"status\": \"affected\", \"version\": \"1.8.1\"}, {\"status\": \"affected\", \"version\": \"1.10.1\"}, {\"status\": \"affected\", \"version\": \"1.12.1\"}, {\"status\": \"affected\", \"version\": \"1.12.6\"}, {\"status\": \"affected\", \"version\": \"1.14.0\"}, {\"status\": \"affected\", \"version\": \"1.10.2\"}, {\"status\": \"affected\", \"version\": \"1.12.7\"}, {\"status\": \"affected\", \"version\": \"1.12.2\"}, {\"status\": \"affected\", \"version\": \"1.6.0\"}, {\"status\": \"affected\", \"version\": \"1.9.0\"}, {\"status\": \"affected\", \"version\": \"1.11.0\"}, {\"status\": \"affected\", \"version\": \"1.7.0\"}, {\"status\": \"affected\", \"version\": \"1.13.0\"}, {\"status\": \"affected\", \"version\": \"1.8.4\"}, {\"status\": \"affected\", \"version\": \"1.13.1\"}, {\"status\": \"affected\", \"version\": \"1.9.1\"}, {\"status\": \"affected\", \"version\": \"1.12.5\"}, {\"status\": \"affected\", \"version\": \"1.13.2\"}, {\"status\": \"affected\", \"version\": \"2.0.2\"}, {\"status\": \"affected\", \"version\": \"1.1.0\"}, {\"status\": \"affected\", \"version\": \"2.0.0\"}, {\"status\": \"affected\", \"version\": \"2.0.1\"}, {\"status\": \"affected\", \"version\": \"8.1.7.21512\"}, {\"status\": \"affected\", \"version\": \"8.1.7\"}, {\"status\": \"affected\", \"version\": \"8.1.5\"}, {\"status\": \"affected\", \"version\": \"8.1.3.21242\"}, {\"status\": \"affected\", \"version\": \"8.1.3\"}, {\"status\": \"affected\", \"version\": \"8.1.5.21322\"}, {\"status\": \"affected\", \"version\": \"8.1.7.21417\"}, {\"status\": \"affected\", \"version\": \"2.1.0.14\"}, {\"status\": \"affected\", \"version\": \"2.2.0\"}, {\"status\": \"affected\", \"version\": \"2.3.0\"}, {\"status\": \"affected\", \"version\": \"2.4.0\"}, {\"status\": \"affected\", \"version\": \"2.5.0\"}, {\"status\": \"affected\", \"version\": \"2.6.0\"}, {\"status\": \"affected\", \"version\": \"2.7.0\"}, {\"status\": \"affected\", \"version\": \"2.8.0\"}, {\"status\": \"affected\", \"version\": \"2.9.0\"}, {\"status\": \"affected\", \"version\": \"2.10.0\"}, {\"status\": \"affected\", \"version\": \"2.10.1\"}, {\"status\": \"affected\", \"version\": \"2.11.0\"}, {\"status\": \"affected\", \"version\": \"1.14.1\"}, {\"status\": \"affected\", \"version\": \"1.15.1\"}, {\"status\": \"affected\", \"version\": \"1.15.2\"}, {\"status\": \"affected\", \"version\": \"1.15.3\"}, {\"status\": \"affected\", \"version\": \"1.15.4\"}, {\"status\": \"affected\", \"version\": \"1.15.5\"}, {\"status\": \"affected\", \"version\": \"1.15.6\"}, {\"status\": \"affected\", \"version\": \"1.16.0\"}, {\"status\": \"affected\", \"version\": \"1.16.1\"}, {\"status\": \"affected\", \"version\": \"1.16.2\"}, {\"status\": \"affected\", \"version\": \"1.16.3\"}, {\"status\": \"affected\", \"version\": \"1.18.0\"}, {\"status\": \"affected\", \"version\": \"1.18.1\"}, {\"status\": \"affected\", \"version\": \"1.20.0\"}, {\"status\": \"affected\", \"version\": \"1.21.0\"}, {\"status\": \"affected\", \"version\": \"1.21.1\"}, {\"status\": \"affected\", \"version\": \"1.21.2\"}, {\"status\": \"affected\", \"version\": \"1.21.3\"}, {\"status\": \"affected\", \"version\": \"1.22.0\"}, {\"status\": \"affected\", \"version\": \"1.22.1\"}, {\"status\": \"affected\", \"version\": \"1.22.2\"}, {\"status\": \"affected\", \"version\": \"1.22.3\"}, {\"status\": \"affected\", \"version\": \"1.22.4\"}, {\"status\": \"affected\", \"version\": \"1.24.0\"}, {\"status\": \"affected\", \"version\": \"1.24.1\"}, {\"status\": \"affected\", \"version\": \"1.24.2\"}, {\"status\": \"affected\", \"version\": \"1.24.3\"}, {\"status\": \"affected\", \"version\": \"1.24.4\"}, {\"status\": \"affected\", \"version\": \"1.26.0\"}, {\"status\": \"affected\", \"version\": \"1.24.5\"}, {\"status\": \"affected\", \"version\": \"1.26.1\"}, {\"status\": \"affected\", \"version\": \"1.27.0\"}, {\"status\": \"affected\", \"version\": \"1.15.0\"}, {\"status\": \"affected\", \"version\": \"1.17.0\"}, {\"status\": \"affected\", \"version\": \"1.17.1\"}, {\"status\": \"affected\", \"version\": \"1.17.2\"}, {\"status\": \"affected\", \"version\": \"1.19.0\"}, {\"status\": \"affected\", \"version\": \"1.20.1\"}, {\"status\": \"affected\", \"version\": \"1.20.2\"}, {\"status\": \"affected\", \"version\": \"1.20.3\"}, {\"status\": \"affected\", \"version\": \"1.20.4\"}, {\"status\": \"affected\", \"version\": \"1.20.5\"}, {\"status\": \"affected\", \"version\": \"1.20.6\"}, {\"status\": \"affected\", \"version\": \"1.23.0\"}, {\"status\": \"affected\", \"version\": \"1.23.1\"}, {\"status\": \"affected\", \"version\": \"1.20.7\"}, {\"status\": \"affected\", \"version\": \"1.20.8\"}, {\"status\": \"affected\", \"version\": \"1.25.0\"}, {\"status\": \"affected\", \"version\": \"1.25.1\"}, {\"status\": \"affected\", \"version\": \"1.25.2\"}, {\"status\": \"affected\", \"version\": \"1.27.1\"}, {\"status\": \"affected\", \"version\": \"1.27.2\"}, {\"status\": \"affected\", \"version\": \"7.3.13\"}, {\"status\": \"affected\", \"version\": \"7.3.15\"}, {\"status\": \"affected\", \"version\": \"7.4.1\"}, {\"status\": \"affected\", \"version\": \"7.4.1.20425\"}, {\"status\": \"affected\", \"version\": \"7.4.1.20439\"}, {\"status\": \"affected\", \"version\": \"7.4.3\"}, {\"status\": \"affected\", \"version\": \"7.4.3.20679\"}, {\"status\": \"affected\", \"version\": \"7.4.5\"}, {\"status\": \"affected\", \"version\": \"7.5.1.20813\"}, {\"status\": \"affected\", \"version\": \"7.5.1.20833\"}, {\"status\": \"affected\", \"version\": \"7.5.3\"}, {\"status\": \"affected\", \"version\": \"7.5.5\"}, {\"status\": \"affected\", \"version\": \"8.0.1.21160\"}, {\"status\": \"affected\", \"version\": \"8.0.1.21164\"}, {\"status\": \"affected\", \"version\": \"7.5.7\"}, {\"status\": \"affected\", \"version\": \"7.5.9\"}, {\"status\": \"affected\", \"version\": \"7.5.11\"}, {\"status\": \"affected\", \"version\": \"8.1.7.21585\"}, {\"status\": \"affected\", \"version\": \"7.5.13.21586\"}, {\"status\": \"affected\", \"version\": \"7.5.13.21598\"}, {\"status\": \"affected\", \"version\": \"8.2.1.21612\"}, {\"status\": \"affected\", \"version\": \"8.2.1.21650\"}, {\"status\": \"affected\", \"version\": \"7.5.15.21611\"}, {\"status\": \"affected\", \"version\": \"7.5.17.21680\"}, {\"status\": \"affected\", \"version\": \"8.2.3.30119\"}, {\"status\": \"affected\", \"version\": \"8.2.4.30130\"}, {\"status\": \"affected\", \"version\": \"8.4.0\"}, {\"status\": \"affected\", \"version\": \"7.5.19\"}, {\"status\": \"affected\", \"version\": \"8.4.1.30298\"}, {\"status\": \"affected\", \"version\": \"8.4.2.30317\"}, {\"status\": \"affected\", \"version\": \"8.4.1.30307\"}, {\"status\": \"affected\", \"version\": \"7.5.20\"}, {\"status\": \"affected\", \"version\": \"8.4.3\"}, {\"status\": \"affected\", \"version\": \"8.4.4.30419\"}, {\"status\": \"affected\", \"version\": \"8.4.4.30467\"}, {\"status\": \"affected\", \"version\": \"7.5.21.21732\"}, {\"status\": \"affected\", \"version\": \"8.4.5.30483\"}], \"defaultStatus\": \"unknown\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-css-Fn4QSZ\", \"name\": \"cisco-sa-clamav-css-Fn4QSZ\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability in the HTML Cascading Style Sheets (CSS) module of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\\r\\n\\r\\nThis vulnerability is due to improper error handling when splitting UTF-8 strings. An attacker could exploit this vulnerability by submitting a crafted HTML file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the scanning process.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-248\", \"description\": \"Uncaught Exception\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2026-03-04T17:44:55.869Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-20031\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-05T15:52:07.708Z\", \"dateReserved\": \"2025-10-08T11:59:15.353Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2026-03-04T17:17:33.372Z\", \"assignerShortName\": \"cisco\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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