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4 vulnerabilities found for by lwIP
CVE-2026-119053 (GCVE-0-2026-119053)
Vulnerability from cvelistv5
Published
2026-10-29 13:08
Modified
2026-10-29 14:01
Severity ?
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability in snmp_pbuf_stream_writeto() that bounds copies by pbuf->len instead of remaining bytes. Remote unauthenticated attackers knowing the read community can send fragmented SNMP requests to receive adjacent receive-buffer or pool memory echoed in responses.
References
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CVE-2026-112062 (GCVE-0-2026-112062)
Vulnerability from cvelistv5
Published
2026-10-18 12:19
Modified
2026-10-19 17:56
Severity ?
6.0 (Medium) - CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
5.9 (Medium) - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
5.9 (Medium) - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
VLAI Severity ?
EPSS score ?
CWE
- CWE-121 - Stack-based Buffer Overflow
Summary
lwIP through 2.2.1 contains a stack out-of-bounds write vulnerability in mdns_handle_response that allows adjacent attackers to corrupt stack memory by sending mDNS responses with invalid domain names. Attackers on the local link can send multicast PTR answers with oversized RDLENGTH or SRV answers with RDLENGTH below 6 during a service search, overflowing a 256-byte stack buffer and crashing the device.
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2026-91018 (GCVE-0-2026-91018)
Vulnerability from cvelistv5
Published
2026-09-22 20:25
Modified
2026-09-23 13:05
Severity ?
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.7 (High) - CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.7 (High) - CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
VLAI Severity ?
EPSS score ?
CWE
- CWE-415 - Double free
Summary
lwIP (Lightweight IP) has a double free vulnerability, which could crash the system, cause a DoS, memory corruption, or allow code execution on the victim system.
References
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CVE-2026-87121 (GCVE-0-2026-87121)
Vulnerability from cvelistv5
Published
2026-09-22 19:48
Modified
2026-09-22 20:23
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 (Critical) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.3 (Critical) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
VLAI Severity ?
EPSS score ?
CWE
Summary
lwIP TCP/IP Stack MQTT is vulnerable to an out-of-bounds write, which may allow an attacker to gain full code execution on the device.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| lwIP | TCP/IP Stack MQTT |
Version: 2.0.1 < |
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"dateUpdated": "2026-09-22T19:51:50.077Z",
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"shortName": "icscert"
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"url": "https://savannah.nongnu.org/projects/lwip"
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{
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"url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-265-01.json"
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"source": {
"advisory": "ICSA-26-265-01",
"discovery": "EXTERNAL"
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"title": "Out-of-bounds write in lwIP TCP/IP Stack MQTT Client Application",
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"datePublished": "2026-09-22T19:48:25.046Z",
"dateReserved": "2026-09-09T21:28:27.099Z",
"dateUpdated": "2026-09-22T20:23:09.069Z",
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