CVE-2025-66863: gnu binutils Uncontrolled Resource Consumption
CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2025-66863DEBIAN-CVE-2025-66863
Published 29-12-2025Last modified 30-12-2025
Vulnerability summary
CVE-2025-66863 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in gnu binutils. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 30% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
0.38%
0%100%
Low · +0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Advisory lineage
Upstream 0 · Downstream 1Timeline
- 29-12-2025PublishedVulnerability first disclosed.
- 30-12-2025Last modifiedVulnerability information updated.
Description
An issue was discovered in function d_discriminator in file cp-demangle.c in BinUtils 2.26 allows attackers to cause a denial of service via crafted PE file.
CVSS metrics
4 scores · 4 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.38%
Chance of exploitation in the next 30 days
Percentile
30%
Versus all other CVEs
30-day change
+0.01 pp
From 0.37% on 18-09-2026
18-09-202618-10-2026
EPSS score0.38%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundCrgf Vul
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Debian1 product
- binutilsAll versions (No fix recorded)
Gnu1 product
- binutils2.26
Ubuntu1 product
- binutilsAll versions (No fix recorded)
3 vendors · 3 products
