CVE-2026-91782: A vulnerability was detected in GNU Binutils 2.47

Routine

LOW 3.3DOWNGRADE

CVE-2026-91782 is a low-severity flaw (CVSS 3.3) affecting binutils. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_allocate_dynrelocs of the file bfd/elfxx-x86.c of the component Dynamic Relocation Allocation. The manipulation results in null pointer dereference. The attack requires a local approach. The exploit is now public and may be used. Upgrading to version 2.48 addresses this issue. The patch is identified as d1268210b6f6/471130b39c0/283d3198bed/0a

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	3.3 (Low)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-404, CWE-476
Published	2026-09-15
Last modified	2026-09-17

Publisher (CNA): VulDB · Vendor: gnu

Last updated 2026-09-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-15 09:16 UTCPublished CVE record published
2026-09-17 14:17 UTCUpdated Record last modified

gnu binutils DOWNGRADE

Affected: 2.47

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.47

1. Check installed version

apt-cache policy binutils || rpm -q binutils || binutils --version

2. No fixed release: DOWNGRADE to a release before 2.47 (Debian / Ubuntu)

apt-cache madison binutils sudo apt install binutils=<VERSION_BEFORE_2.47> sudo apt-mark hold binutils

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list binutils sudo dnf downgrade binutils-<VERSION_BEFORE_2.47> sudo dnf versionlock add binutils

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-91782?

binutils: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-91782 being exploited?

CVE-2026-91782 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-91782 affect?

CVE-2026-91782 affects binutils. Severity is low (CVSS 3.3). A vulnerability was detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_allocate_dynrelocs of the file bfd/elfxx-x86.c of the component Dynamic Relocation Allocation. The manipulation results in null pointe

How urgent is CVE-2026-91782?

Priority 18/100. Public exploit reference

Related CVEs

CVE-2026-6846 HIGH 7.8 UPGRADE MITIGATE A flaw was found in binutils
CVE-2026-6844 MEDIUM 5.5 MITIGATE MITIGATE A flaw was found in the `readelf` utility of the binutils package
CVE-2026-6845 MEDIUM 5.0 MITIGATE MITIGATE A flaw was found in binutils, specifically within the `readelf` utility
CVE-2026-90828 MEDIUM 5.3 DOWNGRADE A security flaw has been discovered in GNU Binutils 2.47
CVE-2026-90804 MEDIUM 4.8 DOWNGRADE A vulnerability was detected in GNU Binutils 2.47

References

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