CVE-2026-91782: binutils Null Dereference — Exploit

Description

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/0a84e560216/a692a633d40. Upgrading the affected component is recommended.

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CVSS v3.1 Score

3.3

LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploit Prediction

0.0012

Probability of exploitation

0.02%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-404 CWE-404

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
gnu	binutils	All

References

Exploits

https://sourceware.org/bugzilla/show_bug.cgi?id=34448 https://vuldb.com/submit/933335

Other References

https://github.com/Ech06/CVE_submit/tree/main/bugzilla/pocs/34448 https://vuldb.com/cve/CVE-2026-91782 https://vuldb.com/vuln/404053 https://vuldb.com/vuln/404053/cti https://www.gnu.org/

Frequently Asked Questions

What is CVE-2026-91782? +

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/0a84e560216/a692a633d40. Upgrading the affected component is recommended. It has a CVSS v3.1 base score of 3.3 (LOW).

How severe is CVE-2026-91782? +

CVE-2026-91782 has a CVSS v3.1 score of 3.3 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0012, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-91782? +

CVE-2026-91782 affects products from gnu, specifically: binutils. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-91782? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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