** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: Additional analysis indicates that the files referenced in the stack trace do not exist in Bison.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Gnu
  • Bison

No data.

No data.

References
Link Providers
https://drive.google.com/file/d/123Qe44FaC-GP88dWNl9-6H4jLWUcXYNZ/view?usp=drive_link cve-icon
https://github.com/akimd/bison/issues/115 cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-8734 cve-icon
https://vuldb.com/?ctiid.319230 cve-icon
https://vuldb.com/?id.319230 cve-icon
https://vuldb.com/?submit.622300 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-8734 cve-icon
https://www.gnu.org/ cve-icon
History

Tue, 04 Nov 2025 00:30:00 +0000

Type Values Removed Values Added
References
Metrics cvssV2_0

{'score': 1.7, 'vector': 'AV:L/AC:L/Au:S/C:N/I:N/A:P'}

cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X'}

Tue, 04 Nov 2025 00:15:00 +0000

Type Values Removed Values Added
Title GNU Bison scan-code.c code_free double free bison: Bison Double Free Vulnerability
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 03 Nov 2025 23:30:00 +0000

Type Values Removed Values Added
Description A vulnerability has been found in GNU Bison up to 3.8.2. This impacts the function code_free of the file src/scan-code.c. The manipulation leads to double free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The actual existence of this vulnerability is currently in question. The issue could not be reproduced from a GNU Bison 3.8.2 tarball run in a Fedora 42 container. ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: Additional analysis indicates that the files referenced in the stack trace do not exist in Bison.
Metrics cvssV3_0

{'score': 3.3, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}

cvssV2_0

{'score': 1.7, 'vector': 'AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P'}

 cvssV2_0

{'score': 1.7, 'vector': 'AV:L/AC:L/Au:S/C:N/I:N/A:P'}

cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X'}

Tue, 28 Oct 2025 01:30:00 +0000

Type Values Removed Values Added
References

Tue, 19 Aug 2025 04:45:00 +0000

Type Values Removed Values Added
Description A vulnerability classified as problematic has been found in GNU Bison up to 3.8.2. Affected is the function code_free of the file src/scan-code.c. The manipulation leads to double free. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. A vulnerability has been found in GNU Bison up to 3.8.2. This impacts the function code_free of the file src/scan-code.c. The manipulation leads to double free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The actual existence of this vulnerability is currently in question. The issue could not be reproduced from a GNU Bison 3.8.2 tarball run in a Fedora 42 container.

Tue, 12 Aug 2025 08:00:00 +0000

Type Values Removed Values Added
First Time appeared Gnu
Gnu bison
Vendors & Products Gnu
Gnu bison

Tue, 12 Aug 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 threat_severity

Low

Fri, 08 Aug 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 08 Aug 2025 18:15:00 +0000

Type Values Removed Values Added
Description A vulnerability classified as problematic has been found in GNU Bison up to 3.8.2. Affected is the function code_free of the file src/scan-code.c. The manipulation leads to double free. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.
Title GNU Bison scan-code.c code_free double free
Weaknesses CWE-119
CWE-415
References
Metrics cvssV2_0

{'score': 1.7, 'vector': 'AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 3.3, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P'}
cve-icon MITRE

Status: REJECTED

Assigner: VulDB

Published: 2025-08-08T18:02:07.827Z

Updated: 2025-11-03T23:19:28.363Z

Reserved: 2025-08-08T07:57:09.262Z

Link: CVE-2025-8734

cve-icon Vulnrichment

Updated:

cve-icon NVD

Status : Rejected

Published: 2025-08-08T18:15:29.527

Modified: 2025-11-04T00:15:44.000

Link: CVE-2025-8734

cve-icon Redhat

Severity : Low

Publid Date: 2025-08-08T18:02:07Z

Links: CVE-2025-8734 - Bugzilla