Is CVE-2026-2657 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-2657, but active exploitation has not been confirmed.

Can CVE-2026-2657 be exploited remotely?

No. CVE-2026-2657 requires local access to exploit.

What is the CVSS score of CVE-2026-2657?

CVE-2026-2657 has a CVSS score of 3.3 (LOW) and an EPSS exploitation probability of 0.02%.

HOME VULNERABILITIESCVE-2026-2657

LOWPOC

CVE-2026-2657

CWE-119Published: February 18, 2026· Updated: Feb 20, 2026

3.3

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.0th

Official Description

A vulnerability has been found in wren-lang wren up to 0.4.0. This impacts the function printError of the file src/vm/wren_compiler.c of the component Error Message Handler. Such manipulation leads to stack-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

NVD Source

Technical Analysis

CVE-2026-2657 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2026-2657. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.