Is CVE-2026-6986 actively exploited?

No active exploitation of CVE-2026-6986 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-6986 be exploited remotely?

Yes. CVE-2026-6986 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-6986?

CVE-2026-6986 has a CVSS score of 3.7 (LOW).

HOME VULNERABILITIESCVE-2026-6986

LOW

CVE-2026-6986

CWE-345Published: April 25, 2026· Updated: Apr 29, 2026

3.7

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:3.0th

Official Description

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This issue affects the function mg_aes_gcm_decrypt of the file /src/tls_aes128.c of the component GCM Authentication Tag Handler. Such manipulation leads to improper verification of cryptographic signature. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is assessed as difficult. The exploit has been disclosed publicly and may be used. Upgrading to version 7.21 is capable of addressing this issue. It is advisable to upgrade the affected component. VulDB has contacted the vendor early and they confirmed quickly, that this issue got fixed already.

NVD Source

Technical Analysis

CVE-2026-6986 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.