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CVE-2021-42637

33
FAUCET Score

CVE-2021-42637 is a critical Server-Side Request Forgery (SSRF) vulnerability affecting PrinterLogic Web Stack versions 19.1.1.13 SP9 and below, stemming from the application's use of user-controlled input to construct URLs. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with low complexity and no user interaction, potentially leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation, public exploit code, or inclusion in CISA's KEV catalog, the vulnerability has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 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:*:*:*:*:*:*
19.1.1.13CPE matchmatch criteria
cpe:2.3:a:printerlogic:web_stack:19.1.1.13:sp9:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.23%
Probability of exploitation in next 30 days
EPSS Percentile
80.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0223 is in the 70th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 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
Not Applicable
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
Third Party Advisory
printerlogic.com / security-bulletin
Vendor Advisory
securityweek.com / printerlogic-patches-code-execution-flaws-printer-management-suite
Third Party Advisory
yahooinc.com / paranoids/paranoids-vulnerability-research-printerlogic-issues-security-alert
ExploitThird Party Advisory