Is CVE-2026-5246 actively exploited?

No active exploitation of CVE-2026-5246 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-5246 be exploited remotely?

Yes. CVE-2026-5246 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-5246?

CVE-2026-5246 has a CVSS score of 5.6 (MEDIUM).

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MEDIUM

CVE-2026-5246

CWE-285Published: April 2, 2026· Updated: Apr 3, 2026

5.6

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:14.0th

Official Description

A vulnerability was determined in Cesanta Mongoose up to 7.20. Affected is the function mg_tls_verify_cert_signature of the file mongoose.c of the component P-384 Public Key Handler. Executing a manipulation can lead to authorization bypass. The attack can be executed remotely. Attacks of this nature are highly complex. The exploitability is told to be difficult. The exploit has been publicly disclosed and may be utilized. Upgrading to version 7.21 is able to address this issue. This patch is called 0d882f1b43ff2308b7486a56a9d60cd6dba8a3f1. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

NVD Source

Technical Analysis

CVE-2026-5246 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.