Quick answers
- Is CVE-2026-91780 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91780 being exploited in the wild.
- How severe is CVE-2026-91780?
- Low severity, with a CVSS score of 3.3, published 15 September 2026.
- Which products and versions are affected?
- Gnu Binutils 2.47.
- Is there a fix for CVE-2026-91780?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-91780 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-91780?
- Check whether you run Gnu Binutils at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a null pointer dereference in the elf_link_add_object_symbols function within bfd/elflink.c of GNU Binutils 2.47. It is triggered by manipulated ELF object files during the linking process. The attack vector is local and requires an attacker to supply a malicious object file that is processed by the vulnerable linker. Successful exploitation leads to denial of service through application crash. Public exploit code has been disclosed, though no active exploitation in the wild has been reported. The vendor has not yet issued a patch.
Affected products
- GNU Binutils 2.47
Timeline
- 2026-09-15: disclosed
- other: Public exploit code made available