CVE-2023-36660

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

Published: 2023-06-25 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-36660 is rated Moderate Risk (49.2/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.11%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-36660

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.58% 0.11% -0.47%
2 2025-11-18 0.11% 0.58% +0.47%
3 2025-04-15 — 0.11% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-36660

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]

Weakness enumeration for CVE-2023-36660

OS Trackers for CVE-2023-36660

vendor priority summary link
debian unimportant CVE-2023-36660 unimportant priority: Debian including 1 source packages (nettle), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2023-36660
gentoo normal CVE-2023-36660: 1 GLSA(s) (202401-24), 1 atom(s) (dev-libs/nettle); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-36660
redhat medium — https://access.redhat.com/security/cve/CVE-2023-36660
suse medium CVE-2023-36660 severity moderate: SUSE including 45 source package names (libhogweed2, libhogweed2-32bit, …), 221 product×package rows across 44 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 7, … (44 product lines)): Known Not Affected 192, Fixed 29. https://www.suse.com/security/cve/CVE-2023-36660/
ubuntu medium CVE-2023-36660 medium priority: Ubuntu including 1 source packages (nettle), 8 status rows across 8 suites (bionic, focal, jammy, kinetic, lunar, trusty, upstream, xenial): not-affected 7, needs-triage 1. https://ubuntu.com/security/CVE-2023-36660

Affected software / configurations for CVE-2023-36660

Vendor Product Version Raw CPE
nettle_project nettle 3.9 cpe:2.3:a:nettle_project:nettle:3.9:*:*:*:*:*:*:*

References for CVE-2023-36660

cvelogic Threat Intelligence