wc_ecc_import_x963_ex KCAPI path · Heap-based Buffer Overflow
Affects MicrosoftSource GCVE Database
Not known to be exploited.
Data as of 27 Oct 2026, 00:09 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Exploitation evidence
Disclosed: evidence found.
CVE published 2 Mar 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
A heap-based buffer overflow vulnerability exists in the wc_ecc_import_x963_ex KCAPI path in Microsoft software versions 2.0 and 3.0. This type of vulnerability can lead to memory corruption, potentially allowing an attacker to execute arbitrary code or cause a denial of service. No CVSS score or detailed impact information is provided. No known exploits in the wild have been reported, and no patch information is available.