CVE-2026-2966

3.7 LOW
Published: February 23, 2026 Modified: February 23, 2026
View on NVD

Description

A weakness has been identified in Cesanta Mongoose up to 7.20. The impacted element is the function mg_sendnsreq of the file /src/dns.c of the component DNS Transaction ID Handler. Executing a manipulation of the argument random can lead to insufficiently random values. The attack can be launched remotely. The attack requires a high level of complexity. The exploitability is regarded as difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/dwBruijn/CVEs/blob/main/Mongoose/mg_sendnsreq.md
Source: cna@vuldb.com
Exploit Third Party Advisory
https://github.com/dwBruijn/CVEs/blob/main/Mongoose/mg_sendnsreq.md#poc
Source: cna@vuldb.com
Exploit Third Party Advisory
https://vuldb.com/?ctiid.347333
Source: cna@vuldb.com
Permissions Required VDB Entry
https://vuldb.com/?id.347333
Source: cna@vuldb.com
Third Party Advisory VDB Entry
https://vuldb.com/?submit.755304
Source: cna@vuldb.com
Third Party Advisory VDB Entry

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
3.7 / 10.0
EPSS (Exploit Probability)
0.1%
28th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

cesanta