do_key_value() · OpenSC < 0.27.0 Buffer Overrun
Affects MicrosoftSource GCVE Database
Not known to be exploited : upgrade to 0.27.0 when convenient.
Data as of 30 Oct 2026, 11:52 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 0.27.0
Exploitation evidence
Disclosed: evidence found.
CVE published 2 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 30 Oct 2026.
What to do
Upgrade Microsoft to 0.27.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Security Response Center Microsoft | Affected
| Fixed in
|
Description
A buffer overrun vulnerability exists in OpenSC versions prior to 0.27.0 in the do_key_value() function via profile.c. This vulnerability is classified as CWE-121 (stack-based buffer overflow). No CVSS score or detailed impact information is provided.