Description
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.
Published: 2026-10-29
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 29 Oct 2026 23:30:00 +0000

Type Values Removed Values Added
First Time appeared Lwip
Lwip lwip
Vendors & Products Lwip
Lwip lwip

Thu, 29 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 29 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Description 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.
Title lwIP 2.0.0 through 2.2.1 SNMP Agent Out-of-Bounds Read via snmp_pbuf_stream_writeto()
First Time appeared Lwip Project
Lwip Project lwip
Weaknesses CWE-125
CPEs cpe:2.3:a:lwip_project:lwip:*:*:*:*:*:*:*:*
Vendors & Products Lwip Project
Lwip Project lwip
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

cvssV4_0

{'score': 6.9, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-29T14:01:51.233Z

Reserved: 2026-10-29T11:51:52.064Z

Link: CVE-2026-119053

cve-icon Vulnrichment

Updated: 2026-10-29T14:01:42.200Z

cve-icon NVD

Status : Deferred

Published: 2026-10-29T14:17:52.463

Modified: 2026-10-29T16:21:34.310

Link: CVE-2026-119053

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-29T23:15:04Z

Weaknesses