Microsoft · OpenSC: `sc_compacttlv_find_tag` can return out-of-bounds pointers
Affects MicrosoftSource GCVE Database
Not known to be exploited.
Data as of 28 Oct 2026, 09:14 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Exploitation evidence
Disclosed: evidence found.
CVE published 1 Apr 2026
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 |
|---|---|---|
| Microsoft Security Response Center Microsoft | Affected
| Fixed in– |
Description
The vulnerability in OpenSC's function `sc_compacttlv_find_tag` can result in returning out-of-bounds pointers. This issue is identified as CWE-126, which relates to buffer over-read vulnerabilities. The affected versions are exactly 2.0 and 3.0 of the product. No CVSS score or detailed impact information is provided, and no patch or remediation details are available.