CVE-2026-2967
lowpriority · track · 0EPSS 0.008 · 56 %ileEUUSEPSS · scored 2026-10-24
A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/net_builtin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is reported as difficult. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.7–6.3
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (22)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (15)
External citations — patches, advisories, analysis.
- https://github.com/dwBruijn/CVEs/blob/main/Mongoose/tcp_rst.mdcnnvd
- https://github.com/dwBruijn/CVEs/blob/main/Mongoose/tcp_rst.md#poccnnvd
- https://vuldb.com/?ctiid.347334cnnvd
- https://vuldb.com/?id.347334cnnvd
- https://vuldb.com/?submit.755450cnnvd
- https://github.com/dwBruijn/CVEs/blob/main/Mongoose/tcp_rst.mdenisa_euvd
- https://github.com/dwBruijn/CVEs/blob/main/Mongoose/tcp_rst.md#pocenisa_euvd
- https://vuldb.com/?ctiid.347334enisa_euvd
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