CVE-2025-66866
published 2025-12-29CVE-2025-66866: 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.
PriorityP433high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.28%
20.1th percentile
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.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | binutils | — | — |
| gnu | binutils | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv7.5HIGH
vendor_debian7.5LOW
vendor_redhat7.5HIGH
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Red Hat
binutils: BinUtils: Denial of Service via crafted PE file
vendor_redhat·2025-12-29·CVSS 7.5
CVE-2025-66866 [HIGH] CWE-125 binutils: BinUtils: Denial of Service via crafted PE file
binutils: BinUtils: Denial of Service via crafted PE file
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.
A flaw was found in BinUtils. An attacker can exploit a vulnerability in the `d_abi_tags` function within the `cp-demangle.c` file by providing a specially crafted Portable Executable (PE) file. This can lead to a Denial of Service (DoS), making the affected application unavailable to legitimate users.
Statement: This vulnerability is rated Low for Red Hat products. The flaw in BinUtils allows for a denial of service when processing a specially crafted Portable Executable (PE) file. For a successful attack to take place the user needs to be tricked to process the maliciously craf
Debian
CVE-2025-66866: binutils - An issue was discovered in function d_abi_tags in file cp-demangle.c in BinUtils...
vendor_debian·2025·CVSS 7.5
CVE-2025-66866 [HIGH] CVE-2025-66866: binutils - An issue was discovered in function d_abi_tags in file cp-demangle.c in BinUtils...
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.
Scope: local
bookworm: open
bullseye: open
forky: open
sid: open
trixie: open
GHSA
GHSA-gjrj-58f4-pgrh: An issue was discovered in function d_abi_tags in file cp-demangle
ghsa_unreviewed·2025-12-29
CVE-2025-66866 [MEDIUM] CWE-20 GHSA-gjrj-58f4-pgrh: An issue was discovered in function d_abi_tags in file cp-demangle
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.
OSV
CVE-2025-66866: An issue was discovered in function d_abi_tags in file cp-demangle
osv·2025-12-29·CVSS 7.5
CVE-2025-66866 [HIGH] CVE-2025-66866: An issue was discovered in function d_abi_tags in file cp-demangle
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2025-66866 rizin: BinUtils: Denial of Service via crafted PE file [fedora-42]
bugzilla·2026-03-23·CVSS 7.5
CVE-2025-66866 [HIGH] CVE-2025-66866 rizin: BinUtils: Denial of Service via crafted PE file [fedora-42]
CVE-2025-66866 rizin: BinUtils: Denial of Service via crafted PE file [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, change the 'ver
Bugzilla
CVE-2025-66866 radare2: BinUtils: Denial of Service via crafted PE file [fedora-42]
bugzilla·2026-03-23·CVSS 7.5
CVE-2025-66866 [HIGH] CVE-2025-66866 radare2: BinUtils: Denial of Service via crafted PE file [fedora-42]
CVE-2025-66866 radare2: BinUtils: Denial of Service via crafted PE file [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, change the 'v
Bugzilla
CVE-2025-66866 binutils: BinUtils: Denial of Service via crafted PE file
bugzilla·2025-12-29·CVSS 7.5
CVE-2025-66866 [HIGH] CVE-2025-66866 binutils: BinUtils: Denial of Service via crafted PE file
CVE-2025-66866 binutils: BinUtils: Denial of Service via crafted PE file
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.
Wiz
CVE-2025-66866 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 7.5
CVE-2025-66866 [HIGH] CVE-2025-66866 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2025-66866 :
NixOS vulnerability analysis and mitigation
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.
Source : NVD
## 7.5
Score
Published December 29, 2025
Severity HIGH
CNA Score 5.5
Affected Technologies
NixOS
Wolfi
Has Public Exploit Yes
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 3.5
Exploitation Probability (EPSS) N/A
Affected packages and libraries
mingw-binutils-generic
gcc-toolset-14-binutils-devel
Sources
NVD
Chainguard No Fix Added at: Jan 15, 2026
Debian 11, 12, 13, 14 Severity LOW No Fix Added at: Dec 30, 2025
Echo Severity HIGH Has Fix Added at: Dec 30, 2025
Homebrew
2025-12-29
Published