CVE-2023-27351

high-risk
Published 2023-04-20

This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication is not required to exploit this vulnerability. The specific flaw exists within the SecurityRequestFilter class. The issue results from improper implementation of the authentication algorithm. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-19226.

Do I need to act?

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44.8% chance of exploitation in next 30 days
EPSS score — higher than 55% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Papercut

References (4)

Vendor Advisory https://www.papercut.com/kb/Main/PO-1216-and-PO-1219
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-23-232/
Vendor Advisory https://www.papercut.com/kb/Main/PO-1216-and-PO-1219
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-23-232/
50
/ 100
high-risk
Severity 26/34 · High
Exploitability 17/34 · Moderate
Exposure 7/34 · Low