What is CVE-2023-36660?

CVE-2023-36660 is a critical-severity vulnerability in Nettle Project, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-06-25.

How severe is CVE-2023-36660?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Nettle Project

CVE-2023-36660

The OCB feature in libnettle in Nettle 3.9 before 3.9.1 allows memory corruption.

Vulnerability class: Buffer Overflow

Published 2023-06-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (62.1th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Nettle Project — versions 3.9

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

bugzilla.suse.com/show_bug.cgi (Patch, Issue Tracking)
git.lysator.liu.se/nettle/nettle/-/commit/867a4548b95705291a3afdd66d76e7f17ba26… (Patch)
git.lysator.liu.se/nettle/nettle/-/compare/nettle_3.9_release_20230514...nettle… (Patch)
security.gentoo.org/glsa/202401-24 (vendor-advisory)

Frequently asked questions

What is CVE-2023-36660?: CVE-2023-36660 is a critical-severity vulnerability in Nettle Project, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-06-25.
How severe is CVE-2023-36660?: Critical severity. CVSS v3 base score is 9.8 out of 10.