CVE-2021-42311 json
Microsoft Defender for IoT Remote Code Execution Vulnerability
published 2021-12-15 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29286
- cvss
- 10.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.4%
- EPSS 4.4% chance of exploitation in 30 days, percentile 91%
- public exploits
- 0
- none known
Summary
Microsoft Defender for IoT Remote Code Execution Vulnerability
Patch / fix
- Microsoft Microsoft Defender for IoT 10.5.2
Exploit prediction
4.42% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- zerodayinitiative.com https://www.zerodayinitiative.com/advisories/ZDI-21-1556/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Affected products
- Microsoft Microsoft Defender for IoT
Classification
- Weakness
-
- CWE-89 Improper Neutralization of Special Elements used in an SQL Command
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2021-42311
patch, vendor-advisory
-
zerodayinitiative.com
/advisories/ZDI-21-1556/
exploit, third-party-advisory, vdb-entry
Sources
- CVE List CVE-2021-42311
- NVD CVE-2021-42311
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.