{"id":"CVE-2023-2533","published":"2023-06-20T15:15:11Z","modified":"2026-06-17T05:52:47Z","title":"PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability","vendor":"PaperCut","product":"NG/MF","tier":"core","eol":null,"description":{"text":"A Cross-Site Request Forgery (CSRF) vulnerability has been identified in\nPaperCut NG/MF, which, under specific conditions, could potentially enable\nan attacker to alter security settings or execute arbitrary code. This could\nbe exploited if the target is an admin with a current login session. Exploiting\nthis would typically involve the possibility of deceiving an admin into clicking\na specially crafted malicious link, potentially leading to unauthorized changes.","provenance":"source","from":"NVD"},"summary":null,"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.28831,"percentile":0.98146,"date":"2026-10-30","provenance":"source"},"kev":{"dateAdded":"2025-07-28","dueDate":"2025-08-18","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","notes":"https://www.papercut.com/kb/Main/SecurityBulletinJune2023 ; https://nvd.nist.gov/vuln/detail/CVE-2023-2533","provenance":"source"},"vulncheckKev":{"dateAdded":"2025-07-28","exploitedFirstSeen":"2025-07-28","ransomware":false,"evidence":[{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2025-07-28"},{"url":"https://www.hkcert.org/security-bulletin/papercut-multiple-vulnerabilities_20250729","date":"2025-07-29"},{"url":"https://8813571.fs1.hubspotusercontent-na1.net/hubfs/8813571/PERISCOPE_VULNINTEL_20250812.pdf","date":"2025-08-12"},{"url":"https://www.rapid7.com/cdn/assets/bltbd2f1cd70f9e3e7f/691360b9c91291146f1a5308/threat-landscape-report-q3-2025.pdf","date":"2025-11-12"},{"url":"https://www.loginsoft.com/reports/annually/vulnerability-intelligence-report-2025","date":"2026-01-20"}],"evidenceTotal":5,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-352","name":"Cross-Site Request Forgery"}],"references":[{"url":"https://fluidattacks.com/advisories/arcangel/","tags":["Exploit","Third Party Advisory"]},{"url":"https://www.papercut.com/kb/Main/SecurityBulletinJune2023","tags":["Vendor Advisory"]},{"url":"https://fluidattacks.com/advisories/arcangel/","tags":["Exploit","Third Party Advisory"]},{"url":"https://www.papercut.com/kb/Main/SecurityBulletinJune2023","tags":["Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-2533","tags":["US Government Resource"]}],"techniques":[{"id":"T1566.002","name":"Spearphishing Link","tactics":["initial-access"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Server-Side Request Forgery (SSRF)","mappingType":"exploitation_technique","evidence":[],"comment":"A CSRF vulnerability in PaperCut NG/MF can be exploited by an attacker targeting an admin with a current login session and tricking the admin into clicking a link. This exploit can lead to security setting modification and arbitrary code execution.","confidence":"high"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Server-Side Request Forgery (SSRF)","mappingType":"primary_impact","evidence":[],"comment":"A CSRF vulnerability in PaperCut NG/MF can be exploited by an attacker targeting an admin with a current login session and tricking the admin into clicking a link. This exploit can lead to security setting modification and arbitrary code execution.","confidence":"high"},{"id":"T1547","name":"Boot or Logon Autostart Execution","tactics":["persistence","privilege-escalation"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Server-Side Request Forgery (SSRF)","mappingType":"primary_impact","evidence":[],"comment":"A CSRF vulnerability in PaperCut NG/MF can be exploited by an attacker targeting an admin with a current login session and tricking the admin into clicking a link. This exploit can lead to security setting modification and arbitrary code execution.","confidence":"high"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2023-34012","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-34012","exploited":true,"exploitedSince":"2025-07-28","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":["https://fluidattacks.com/advisories/arcangel/"],"flow":[{"stage":"exploitation","techniques":["T1566.002"],"provenance":"source"},{"stage":"primary","techniques":["T1059","T1547"],"provenance":"source"}],"timeline":[{"date":"2023-06-20","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-2533","provenance":"source"},{"date":"2025-07-28","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","provenance":"source"},{"date":"2025-07-28","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2025-07-28","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-34012","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":769},"priority":{"score":68.8,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 460 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.63,"detail":"percentile 0.9815"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 NVD reference tagged Exploit"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":6.16,"detail":"base score 8.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}