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CVE-2021-42631

32
FAUCET Score

CVE-2021-42631 is a critical deserialization vulnerability affecting PrinterLogic Web Stack versions 19.1.1.13 SP9 and earlier, potentially impacting environments utilizing Apple and Linux systems. This pre-authentication remote code execution flaw carries a high CVSS score of 8.1, indicating a network-based attack with high impact on confidentiality, integrity, and availability, despite requiring high attack complexity. While there is no evidence of active exploitation (KEV) or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, suggesting awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
<= 20.0.1304CPE matchmatch criteria
cpe:2.3:a:printerlogic:virtual_appliance:*:*:*:*:*:*:*:*
< 19.1.1.13CPE matchmatch criteria
cpe:2.3:a:printerlogic:web_stack:*:*:*:*:*:*:*:*
19.1.1.13CPE matchmatch criteria
cpe:2.3:a:printerlogic:web_stack:19.1.1.13:-:*:*:*:*:*:*
19.1.1.13CPE matchmatch criteria
cpe:2.3:a:printerlogic:web_stack:19.1.1.13:sp2:*:*:*:*:*:*
19.1.1.13CPE matchmatch criteria
cpe:2.3:a:printerlogic:web_stack:19.1.1.13:sp3-3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
6.12%
Probability of exploitation in next 30 days
EPSS Percentile
92.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0612 is in the 66th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

portswigger.net / daily-swig/printerlogic-vendor-addresses-triple-rce-threat-against-all-connected-endpoints
Press/Media CoverageThird Party Advisory
securityaffairs.co / wordpress/127194/security/printerlogic-printer-management-suite-flaws.html
Third Party Advisory
thecyberthrone.in / 2022/01/26/printerlogic-%F0%9F%96%A8-fixes-critical-vulnerabilities-in-its-suite
Press/Media CoverageThird Party Advisory
printerlogic.com / security-bulletin
Vendor Advisory
securityweek.com / printerlogic-patches-code-execution-flaws-printer-management-suite
Press/Media CoverageThird Party Advisory
yahooinc.com / paranoids/paranoids-vulnerability-research-printerlogic-issues-security-alert
ExploitPress/Media CoverageThird Party Advisory