CVE-2026-20043 (GCVE-0-2026-20043)
Vulnerability from cvelistv5
Published
2026-10-21 16:12
Modified
2026-10-22 23:04
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-787 - Out-of-bounds Write
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-20043 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787.
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco Cyber Vision |
Version: 3.0.0 Version: 3.0.2 Version: 3.0.3 Version: 3.0.1 Version: 3.1.0 Version: 3.0.4 Version: 3.1.1 Version: 3.1.2 Version: 3.2.0 Version: 3.0.5 Version: 3.2.1 Version: 3.0.6 Version: 3.2.2 Version: 3.2.3 Version: 3.2.4 Version: 4.0.0 Version: 4.0.1 Version: 4.0.2 Version: 4.0.3 Version: 4.1.0 Version: 4.1.1 Version: 4.1.2 Version: 4.1.3 Version: 4.1.4 Version: 4.2.0 Version: 4.2.1 Version: 4.1.5 Version: 4.2.2 Version: 4.2.X Version: 4.2.3 Version: 4.2.4 Version: 4.2.6 Version: 4.1.6 Version: 4.3.0 Version: 4.3.1 Version: 4.3.2 Version: 4.3.3 Version: 4.4.0 Version: 4.4.1 Version: 4.4.2 Version: 4.4.3 Version: 4.1.7 Version: 5.0.0 Version: 5.0.1 Version: 5.0.2 Version: 5.1.0 Version: 5.1.1 Version: 5.1.2 Version: 5.1.3 Version: 5.2.0 Version: 5.2.1 Version: 5.3.0 Version: 5.3.1 Version: 5.3.2 Version: 5.3.3 Version: 5.5.1 Version: 5.6.1 Version: 5.4.0 Version: 5.4.1 Version: 5.4.2 Version: 5.7.0 Version: 5.8.1 Version: 5.7.1 Version: 5.8.0 Version: 5.5.2 |
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\"17.9.5a\"}, {\"status\": \"affected\", \"version\": \"17.12.3\"}, {\"status\": \"affected\", \"version\": \"17.6.7\"}, {\"status\": \"affected\", \"version\": \"17.14.1a\"}, {\"status\": \"affected\", \"version\": \"17.12.4\"}, {\"status\": \"affected\", \"version\": \"17.12.3a\"}, {\"status\": \"affected\", \"version\": \"17.15.1a\"}, {\"status\": \"affected\", \"version\": \"17.6.8\"}, {\"status\": \"affected\", \"version\": \"17.9.6\"}, {\"status\": \"affected\", \"version\": \"17.6.8a\"}, {\"status\": \"affected\", \"version\": \"17.16.1a\"}, {\"status\": \"affected\", \"version\": \"17.9.5e\"}, {\"status\": \"affected\", \"version\": \"17.12.4a\"}, {\"status\": \"affected\", \"version\": \"17.15.2c\"}, {\"status\": \"affected\", \"version\": \"17.9.5f\"}, {\"status\": \"affected\", \"version\": \"17.12.4b\"}, {\"status\": \"affected\", \"version\": \"17.15.2a\"}, {\"status\": \"affected\", \"version\": \"17.12.5\"}, {\"status\": \"affected\", \"version\": \"17.17.1\"}, {\"status\": \"affected\", \"version\": \"17.12.5a\"}, {\"status\": \"affected\", \"version\": \"17.9.7a\"}, {\"status\": \"affected\", \"version\": \"17.15.3a\"}, {\"status\": \"affected\", \"version\": \"17.15.3\"}, {\"status\": \"affected\", \"version\": \"17.12.5b\"}, {\"status\": \"affected\", \"version\": \"17.12.5c\"}, {\"status\": \"affected\", \"version\": \"17.15.4\"}, {\"status\": \"affected\", \"version\": \"17.9.7b\"}, {\"status\": \"affected\", \"version\": \"17.18.1\"}, {\"status\": \"affected\", \"version\": \"17.18.1a\"}, {\"status\": \"affected\", \"version\": \"17.12.6\"}, {\"status\": \"affected\", \"version\": \"17.9.8\"}, {\"status\": \"affected\", \"version\": \"17.15.4c\"}, {\"status\": \"affected\", \"version\": \"17.12.5d\"}, {\"status\": \"affected\", \"version\": \"17.18.2\"}, {\"status\": \"affected\", \"version\": \"26.1.1\"}, {\"status\": \"affected\", \"version\": \"17.15.5\"}, {\"status\": \"affected\", \"version\": \"17.15.5a\"}, {\"status\": \"affected\", \"version\": \"17.12.7\"}, {\"status\": \"affected\", \"version\": \"17.12.7a\"}, {\"status\": \"affected\", \"version\": \"17.12.7b\"}, {\"status\": \"affected\", \"version\": \"17.9.9\"}, {\"status\": \"affected\", \"version\": \"17.18.3a\"}, {\"status\": \"affected\", \"version\": \"17.12.8\"}, {\"status\": \"affected\", \"version\": \"17.15.6\"}, {\"status\": \"affected\", \"version\": \"17.18.4\"}, {\"status\": \"affected\", \"version\": \"26.1.2\"}, {\"status\": \"affected\", \"version\": \"17.9.10\"}], \"defaultStatus\": \"unknown\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-snort3-ybgmhTQe\", \"name\": \"cisco-sa-hardening-snort3-ybgmhTQe\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\\r\\n\\r\\nThe vulnerabilities tracked by CVE-2026-20043 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-787\", \"description\": \"Out-of-bounds Write\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2026-10-22T19:10:39.145Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-20043\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-22T23:04:45.240Z\", \"dateReserved\": \"2025-10-08T11:59:15.354Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2026-10-21T16:12:29.730Z\", \"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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