Vulnerability · CVE-2023-36660
The OCB feature in libnettle in Nettle 3.9 before 3.9.1 allows memory corruption.
Published Jun 25, 2023 · catalog updated Oct 15, 2026 · nettle project
Check if you run it
No confirmed exploitation is on record for CVE-2023-36660. EPSS is 1.02%. Act only if a listed version of nettle project is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Critical9.8
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 1.02%
- Remediation
- Advisory link
- Affected products
- cpe nettle project/nettle
The OCB feature in libnettle in Nettle 3.9 before 3.9.1 allows memory corruption.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe nettle project/nettle3.9
How to fix CVE-2023-36660
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2023-36660. EPSS is 1.02%. Act only if a listed version of nettle project is installed.
Which versions are affected?
Compare what you have installed with nettle project/nettle 3.9. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-787: Out-of-bounds Write. EPSS 1.02%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Jun 25, 2023 · NIST NVD
Detected
The OCB feature in libnettle in Nettle 3.9 before 3.9.1 allows memory corruption.
Oct 15, 2026 · NIST NVD
Updated
The OCB feature in libnettle in Nettle 3.9 before 3.9.1 allows memory corruption.
Sources
- CVE.orgVulnerability recordCVE-2023-36660
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2023-36660
30-day exploitation probability 1.0%
first.org - NIST NVDVulnerability recordCVE-2023-36660
The OCB feature in libnettle in Nettle 3.9 before 3.9.1 allows memory corruption.
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.