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Fencer Vulns
low 3.3

CVE-2026-91780 json

GNU Binutils elflink.c elf_link_add_object_symbols null pointer dereference

published 2026-09-15 55 d ago modified 2026-09-16 54 d ago also EUVD-2026-78327

cvss
3.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits
0
none known

Summary

A weakness has been identified in GNU Binutils 2.47. This impacts the function elf_link_add_object_symbols of the file bfd/elflink.c. Executing a manipulation can lead to null pointer dereference. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through a bug report but has not responded yet.

Patch / fix

  • binutils hummingbird 1 2.46.1-1.2.hum1
  • binutils-gold hummingbird 1 2.46.1-1.2.hum1
  • binutils-gprofng hummingbird 1 2.46.1-1.2.hum1

red hat advisories RHSA-2026:67961

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-91780 updated cvss 5.0

binutils: GNU Binutils: Local denial of service via null pointer dereference

  • Red Hat Hardened Images binutils 2.46.1-1.2.hum1, binutils-gold 2.46.1-1.2.hum1, binutils-gprofng 2.46.1-1.2.hum1
    fixed: vendor fix RHSA-2026:67961

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
55 d ago

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • vuldb.com https://vuldb.com/submit/933334 referenced PoC, tagged "exploit" by a source, unverified
  • sourceware.org https://sourceware.org/bugzilla/show_bug.cgi?id=34447 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/Ech06/CVE_submit/tree/main/bugzilla/pocs/34447 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 4.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CNA 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
CNA 3.0 3.3 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
CNA 2.0 1.7 AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR
CNA 4.0 1.9 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CNA 2.0 1.7 AV:L/AC:L/Au:S/C:N/I:N/A:P

Affected products

  • GNU Binutils

Classification

Weakness
  • CWE-476 NULL Pointer Dereference
  • CWE-404 Improper Resource Shutdown or Release

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.