CVE-2026-2967

LOW EPSS 38.5%
Published Feb 23, 20264mo ago · Modified Jun 17, 20261w ago
2.9 CVSS 4.0
Low
Find Similar
Published Feb 23, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
2.9
Exploitability
—
Impact
—
Vector string
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
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
38.5% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-940

Affected Products 1

VendorProductVersionRange
cesantamongoose* ≤7.20

References 5

  • github.com https://github.com/dwBruijn/CVEs/blob/main/Mongoose/tcp_rst.md
    ExploitThird Party Advisory
  • github.com https://github.com/dwBruijn/CVEs/blob/main/Mongoose/tcp_rst.md#poc
    ExploitThird Party Advisory
  • vuldb.com https://vuldb.com/?ctiid.347334
    Permissions RequiredVDB Entry
  • vuldb.com https://vuldb.com/?id.347334
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/?submit.755450
    Third Party AdvisoryVDB Entry

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.