An issue was discovered in function d_print_comp_inner in file cp-demangle.c in BinUtils…
Priority HIGH 72CWE-121Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 1 fixed, 7 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-121 and the CVSS impact.
Summary
An issue was discovered in function d_print_comp_inner in file cp-demangle.c in BinUtils 2.26 allows attackers to cause a denial of service via crafted PE file.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00376 31st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 7 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
Red Hat 1 advisory
- RHSA-2026:7098 Released 2026-04-08 · Red Hat rating ModerateRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images binutils-2.45.1-5.hum1@aarch64, binutils-2.45.1-5.hum1@src, binutils-2.45.1-5.hum1@x86_64 +6
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | — |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat Hardened Images | Fixed | RHSA-2026:7098 |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-66865
- 2026-10-03 Alias added: GHSA-w539-2pgj-g759
- 2026-11-06 Affected versions changed · Red Hat
References
More GNU Binutils vulnerabilities
- TI-2020-13695 An issue was discovered in binutils libbfd.c 2.36 relating to the auxiliary symbol data… CVSS 3.1HIGH 8.8
- TI-2025-42907 GNU Binutils thru 2.46 readelf contains a double free vulnerability when processing a… CVSS 3.1HIGH 7.5
- TI-2025-41069 An issue was discovered in function d_discriminator in file cp-demangle.c in BinUtils… CVSS 3.1HIGH 7.5
- TI-2025-41068 A buffer overflow vulnerability in function gnu_special in file cplus-dem.c in BinUtils… CVSS 3.1HIGH 7.5
- TI-2021-21105 Heap-based Buffer Overflow in function bfd_getl32 in Binutils objdump 3.37. CVSS 3.1HIGH 7.5
- TI-2020-17948 GNU Binutils before 2.34 has an uninitialized-heap vulnerability in function… CVSS 3.1HIGH 7.5
Sources
- CVE-2025-66865 · CVE Program
- CVE-2025-66865 · NVD
- FIRST EPSS
- GHSA-w539-2pgj-g759 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-66865 · Red Hat security data · CC BY 4.0
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