CVE-2023-36377: osslsigncode
Affects osslsigncodeSource CVE Database V5
Not known to be exploited.
Data as of 26 Oct 2026, 12:54 UTC
Rated High by the CNA (mitre) · No CVSS score from NVD or the CNA
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 3 Jul 2023
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
GitHubmtrojnar/osslsigncodepkg:github/mtrojnar/osslsigncodeOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until a fix is available, restrict local access to trusted users and avoid processing untrusted .exe, .sys, or .dll files with osslsigncode.
Description
A buffer overflow vulnerability exists in osslsigncode version 2.3 and earlier. This flaw allows a local attacker to execute arbitrary code by crafting malicious .exe, .sys, or .dll files. The vulnerability affects versions up to and including 2.3. No CVSS score is provided for this issue.