CVEvulnerability
CVE-2026-2967
2.9 LOW
Official page ↗
- Status
- Analyzed
- Published
- 2026-02-23
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 2.9 LOW — CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 3.7 LOW — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- CVSS 2.0 ([email protected])
- 2.6 LOW — AV:N/AC:H/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-940
Description
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.
Affected configurations
• cesanta mongoose (<= 7.20)
Related
Weakness · CWE (1)
- CWE-940 Improper Verification of Source of a Communication Channel weakness
References
- https://github.com/dwBruijn/CVEs/blob/main/Mongoose/tcp_rst.md Exploit, Third Party Advisory
- https://github.com/dwBruijn/CVEs/blob/main/Mongoose/tcp_rst.md#poc Exploit, Third Party Advisory
- https://vuldb.com/?ctiid.347334 Permissions Required, VDB Entry
- https://vuldb.com/?id.347334 Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.755450 Third Party Advisory, VDB Entry