GNU Binutils 2.26 PE File cp-demangle.c d_abi_tags denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in GNU Binutils 2.26. Impacted is the function d_abi_tags of the file cp-demangle.c of the component PE File Handler. Such manipulation leads to denial of service. This vulnerability is traded as CVE-2025-66866. An attack has to be approached locally. There is no exploit available.

Detailsinfo

A vulnerability was found in GNU Binutils 2.26 and classified as problematic. Affected by this issue is the function d_abi_tags of the file cp-demangle.c of the component PE File Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

An issue was discovered in function d_abi_tags in file cp-demangle.c in BinUtils 2.26 allows attackers to cause a denial of service via crafted PE file.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-66866 since 12/08/2025. The exploitation is known to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 280128 (Linux Distros Unpatched Vulnerability : CVE-2025-66866), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (280128), EUVD (EUVD-2025-205615) and CERT Bund (WID-SEC-2025-2933). Once again VulDB remains the best source for vulnerability data.

Affected

  • Open Source binutils

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 280128
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-66866

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

12/08/2025 CVE reserved
12/29/2025 +21 days Advisory disclosed
12/29/2025 +0 days VulDB entry created
01/15/2026 +17 days VulDB entry last update

Sourcesinfo

Vendor: gnu.org

Advisory: github.com
Status: Not defined

CVE: CVE-2025-66866 (🔒)
GCVE (CVE): GCVE-0-2025-66866
GCVE (VulDB): GCVE-100-338684
EUVD: 🔒
CERT Bund: WID-SEC-2025-2933 - binutils: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 12/29/2025 17:54
Updated: 01/15/2026 07:34
Changes: 12/29/2025 17:54 (56), 12/30/2025 06:16 (1), 12/30/2025 11:19 (2), 12/30/2025 12:35 (7), 01/15/2026 07:34 (11)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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