Out-of-bounds write in binutils
Priority MEDIUM 40CWE-787Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.
Summary
A flaw was found in binutils readelf 2.35 program. An attacker who is able to convince a victim using readelf to read a crafted file could trigger a stack buffer overflow, out-of-bounds write of arbitrary data supplied by the attacker. The highest impact of this flaw is to confidentiality, integrity, and availability.
Why it matters now
EPSS 0.03278 88th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | binutils | binutils 2.35.2 | — | No fix listed | CNA |
- binutils Vendor— Affected binutils 2.35.2 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Will not fix |
Not affected: 2 products
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20294
- 2026-10-03 Alias added: GHSA-rrj7-qm3x-w26v
References
Other 3
- [bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8
- [bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8
- https://sourceware.org/git/?p=binutils-gdb.git%3Ba=patch%3Bh=372dd157272e0674d13372655cc60eaca9c06926
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-2025-41071 An issue was discovered in function d_print_comp_inner in file cp-demangle.c in BinUtils… 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
Sources
- CVE-2021-20294 · CVE Program
- CVE-2021-20294 · NVD
- FIRST EPSS
- GHSA-rrj7-qm3x-w26v · GitHub Advisory Database · CC BY 4.0
- CVE-2021-20294 · Red Hat security data · CC BY 4.0
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