CVE-2026-4647: gnu binutils Out-of-bounds Read
Vulnerability summary
CVE-2026-4647 is a medium (CVSS 6.1) Out-of-bounds Read vulnerability in gnu binutils. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.7% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 3 · Related 2Timeline
- 23-03-2026PublishedVulnerability first disclosed.
- 01-09-2026Last modifiedVulnerability information updated.
Description
A flaw was found in the GNU Binutils BFD library, a widely used component for handling binary files such as object files and executables. The issue occurs when processing specially crafted XCOFF object files, where a relocation type value is not properly validated before being used. This can cause the program to read memory outside of intended bounds. As a result, affected tools may crash or expose unintended memory contents, leading to denial-of-service or limited information disclosure risks.
CVSS metrics
6 scores · 6 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
- OSV · WolfiEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
- NVDNIST6.1MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
EPSS trend
Probability
0.17%
Chance of exploitation in the next 30 days
Percentile
6%
Versus all other CVEs
30-day change
0.00 pp
From 0.17% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Chainguard6 products
- binutils< 2.46.1-r2
- binutils-arm-none-eabi< 2.47-r0
- binutils-arm-none-eabi-doc< 2.47-r0
- binutils-devAll versions (No fix recorded)
- binutils-docAll versions (No fix recorded)
Wolfi4 products
- binutils< 2.46.1-r2
- binutils-devAll versions (No fix recorded)
- binutils-docAll versions (No fix recorded)
- binutils-goldAll versions (No fix recorded)
Redhat2 products
- enterprise_linuxEOL6.0 | 7.0 | 8.0 | 9.0 | 10.0
- openshift_container_platform4.0
Debian1 product
- binutilsAll versions (No fix recorded) | < 2.47-1
Gnu1 product
- binutilsna
Ubuntu1 product
- binutilsAll versions (No fix recorded)
6 vendors · 15 products
References
12 links- access.redhat.com/security/cve/CVE-2026-4647VDB EntryX Refsource REDHATREPORTAdvisoryMitigationVendor Advisory
