What is CVE-2023-37732?

CVE-2023-37732 is a medium-severity vulnerability in Yasm Project, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2023-07-26.

How severe is CVE-2023-37732?

Medium severity. CVSS v3 base score is 5.5 out of 10.

NULL pointer dereference in Yasm Project

CVE-2023-37732

Yasm v1.3.0.78 was found prone to NULL Pointer Dereference in /libyasm/intnum.c and /elf/elf.c, which allows the attacker to cause a denial of service via a crafted file.

Published 2023-07-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (28.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Yasm Project — versions 1.3.0.78.g4dc8

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

github.com/yasm/yasm/issues/233 (Exploit)
gist.github.com/ChanStormstout/02eea9cf5c002b42b2ff3de5ca939520 (Third Party Advisory)

Frequently asked questions

What is CVE-2023-37732?: CVE-2023-37732 is a medium-severity vulnerability in Yasm Project, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2023-07-26.
How severe is CVE-2023-37732?: Medium severity. CVSS v3 base score is 5.5 out of 10.