CVE-2021-3942
No exploitation reported by the sources we read.
- Published2022-12-12
- Fixed in5.4 · 4.11.2.3 · 3.9.9
- WeaknessCWE-119
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
Certain HP Print products and Digital Sending products may be vulnerable to potential remote code execution and buffer overflow with use of Link-Local Multicast Name Resolution or LLMNR.
Timeline
dates in UTC- 2022-12-1213:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-3942?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-3942?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 5.x | ≥ 5.0, < 5.4 | 5.4 | NVD |
| 4.x | ≥ 4.0, < 4.11.2.3 | 4.11.2.3 | NVD |
| 4.x | ≥ 4.0.0, < 4.11.2.3 | 4.11.2.3 | NVD |
| 3.x | ≥ 3.0, < 3.9.9 | 3.9.9 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 5.x | ≥ 5.0, < 5.4 | 5.4 | NVD |
| 4.x | ≥ 4.0, < 4.11.23 | 4.11.23 | NVD |
| 3.x | ≥ 3.0, < 3.9.9 | 3.9.9 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 5.x | ≥ 5.0, < 5.4 | 5.4 | NVD |
| 4.x | ≥ 4.0, < 4.11.2.3 | 4.11.2.3 | NVD |
| 3.x | ≥ 3.0, < 3.9.9 | 3.9.9 | NVD |
437 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Hp color laserjet enterprise m553 b5l39a firmware to 5.4 · 4.11.2.3 · 3.9.9
Advisories and patches
- support.hp.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2022-12-12
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2021-3942?
Is CVE-2021-3942 actively exploited?
What is the CVSS score for CVE-2021-3942?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.