Buffer overflow in GNU Binutils
CVE-2025-11083
A vulnerability has been found in GNU Binutils 2.45. The affected element is the function elf_swap_shdr in the library bfd/elfcode.h of the component Linker. The manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. The identifier of the patch is 9ca499644a21ceb3f946d1c179c38a83be084490. To fix this issue, it is recommended to deploy a patch. The code maintainer replied with "[f]ixed for 2.46".
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: 0.003 (15.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- GNU Binutils — versions 2.45
Weakness classification (CWE)
Public proof-of-concept exploits
References
- VDB-326124 | GNU Binutils Linker elfcode.h elf_swap_shdr heap-based overflow (technical-description, Third Party Advisory, VDB Entry, vdb-entry)
- VDB-326124 | CTI Indicators (IOB, IOC, IOA) (signature, Permissions Required, permissions-required, VDB Entry)
- Submit #661277 | GNU Binutils 2.45 Heap-based Buffer Overflow (Third Party Advisory, VDB Entry, third-party-advisory)
- sourceware.org/bugzilla/show_bug.cgi (issue-tracking, Exploit, Issue Tracking)
- sourceware.org/bugzilla/show_bug.cgi (issue-tracking, Exploit, Issue Tracking)
- sourceware.org/bugzilla/attachment.cgi (exploit, Broken Link)
- sourceware.org/git/gitweb.cgi (Patch, patch)
- www.gnu.org/ (Product, product)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2025-11083?
- CVE-2025-11083 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 2025-09-27.
- How severe is CVE-2025-11083?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2025-11083 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.