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A vulnerability was found in GNU Bison up to 3.8.2. It...

Moderate severity Unreviewed Published Aug 8, 2025 to the GitHub Advisory Database • Updated Aug 8, 2025

Package

No package listed— Suggest a package

Affected versions

Unknown

Patched versions

Unknown

Description

A vulnerability was found in GNU Bison up to 3.8.2. It has been rated as problematic. This issue affects the function __obstack_vprintf_internal of the file obprintf.c. The manipulation leads to reachable assertion. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used.

References

Published by the National Vulnerability Database Aug 8, 2025
Published to the GitHub Advisory Database Aug 8, 2025
Last updated Aug 8, 2025

Severity

Moderate

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(3rd percentile)

Weaknesses

Reachable Assertion

The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary. Learn more on MITRE.

CVE ID

CVE-2025-8733

GHSA ID

GHSA-jmj9-h6g4-v58q

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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