Is CVE-2026-2966 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-2966, but active exploitation has not been confirmed.

Can CVE-2026-2966 be exploited remotely?

Yes. CVE-2026-2966 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-2966?

CVE-2026-2966 has a CVSS score of 3.7 (LOW) and an EPSS exploitation probability of 0.09%.

HOME VULNERABILITIESCVE-2026-2966

LOWPOC

CVE-2026-2966

CWE-310Published: February 23, 2026· Updated: Feb 23, 2026

3.7

CVSS v3.1

EPSS:0.09%probability of exploitation in 30 daysPercentile:26.4th

Official 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.

NVD Source

Technical Analysis

CVE-2026-2966 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A proof-of-concept (PoC) exploit exists for CVE-2026-2966. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.