Osslsigncode is a utility for digitally signing Windows executables and catalogs using OpenSSL, deployed across build pipelines and code-signing workflows where it operates with elevated privilege. Its vulnerability profile centers on memory-safety and integer-handling defects, including out-of-bounds reads, buffer overflows, integer overflows and underflows, and improper privilege management, typical of native code tools that parse and manipulate binary file formats. Current exploitation status and severity figures are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Osslsigncode Project over time
Signals from CVEs in this vendor scope (5 CVEs).
5 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2025-70888CRITICAL An issue in mtrojnar Osslsigncode affected at v2.10 and before allows a remote attacker to escalate privileges via the osslsigncode.c component | Mar 25, 2026 | 9.8 | 30 | NO | NO |
CVE-2026-39853HIGH osslsigncode is a tool that implements Authenticode signing and timestamping. Prior to 2.12, A stack buffer overflow vulnerability exists in osslsigncode in several signature verif | Apr 9, 2026 | 7.8 | 27 | NO | NO |
CVE-2023-36377HIGH Buffer Overflow vulnerability in mtrojnar osslsigncode v.2.3 and before allows a local attacker to execute arbitrary code via a crafted .exe, .sys, and .dll files. | Jul 3, 2023 | 7.8 | 22 | NO | NO |
CVE-2026-39856MEDIUM osslsigncode is a tool that implements Authenticode signing and timestamping. Prior to 2.13, an out-of-bounds read vulnerability exists in osslsigncode version 2.12 and earlier in | Apr 9, 2026 | 5.5 | 21 | NO | NO |
CVE-2026-39855MEDIUM osslsigncode is a tool that implements Authenticode signing and timestamping. Prior to 2.13, an integer underflow vulnerability exists in osslsigncode version 2.12 and earlier in t | Apr 9, 2026 | 5.5 | 21 | NO | NO |
Signals from CVEs in this vendor scope (5 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Osslsigncode Project.
Media articles that mention a CVE ID that affects a product developed by Osslsigncode Project — matched by CVE ID, not by vendor name.