PT-2025-32387 · Gnu+2 · Gnu Bison+2

Xudong Cao + 1 · Published 2025-01-01 · Updated 2025-10-28 · CVE-2025-8733

Positive Technologies (AI Summary)

CVSS v3.1

3.3

Low

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions GNU Bison versions up to 3.8.2

Description A problematic issue was found in GNU Bison affecting the obstack vprintf internal function within the obprintf.c file. The manipulation leads to a reachable assertion. The exploit has been publicly disclosed.

Recommendations Update to a version beyond 3.8.2.

Exploit

Fix

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

BDU:2025-10833

CVE-2025-8733

Affected Products

Debian

Gnu Bison

Red Os

References · 23

• 🔥 https://github.com/akimd/bison/issues/114 · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-8733 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-8733 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-8733 · Security Note
• https://ubuntu.com/security/CVE-2025-8733 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-8733 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-8733 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-8733 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-10833 · Security Note
• https://github.com/akimd/bison/issues/113 · Note
• https://redos.red-soft.ru/support/secure · Note
• https://openwall.com/lists/oss-security/2025/10/27/12 · Note
• https://twitter.com/CVEnew/status/1953876888549487038 · Twitter Post
• https://vuldb.com/?ctiid.319229 · Note
• https://gnu.org · Note