Buffer overflow in GNU Binutils
CVE-2026-90801
A security flaw has been discovered in GNU Binutils 2.47. This impacts the function cache_bwrite of the file bfd/cache.c of the component ld. The manipulation of the argument nbytes results in buffer overflow. The attack requires a local approach. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through a bug report but has not responded yet.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (10.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- GNU Binutils — versions 2.47
Weakness classification (CWE)
References
- vuldb.com/vuln/403303 (Permissions Required, technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/403303/cti (signature, Permissions Required, permissions-required, VDB Entry, Third Party Advisory)
- vuldb.com/cve/CVE-2026-90801 (Permissions Required, VDB Entry, Third Party Advisory, third-party-advisory)
- vuldb.com/submit/920276 (Permissions Required, VDB Entry, Third Party Advisory, third-party-advisory)
- sourceware.org/bugzilla/show_bug.cgi (issue-tracking, Exploit, Third Party Advisory)
- github.com/r1ck9-2q/cve_summit/blob/main/Heap-buffer-overflow in `cache_bwrite`… (Exploit, Third Party Advisory, exploit, Mitigation)
- www.gnu.org/ (Product, product, broken-link)
Frequently asked questions
- What is CVE-2026-90801?
- CVE-2026-90801 is a medium-severity vulnerability in GNU Binutils, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2026-09-14.
- How severe is CVE-2026-90801?
- Medium severity. CVSS v3 base score is 5.3 out of 10.