CVE-2023-2533
PaperCut NG/MF: Cross-Site Request Forgery (CSRF)
As of , CVE-2023-2533 in PaperCut NG/MF is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch soon.
- Exploited
- Yes: CISA listed it on 28 July 2025
- US federal deadline
- 18 August 202521 days after CISA listed it. US federal civilian agencies must fix it by then.
- Used in ransomware campaigns
- Not known to CISA
- EPSS score
- 0.29Higher than 98% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
- Public exploit
- None foundNeither Metasploit nor Exploit-DB lists one.
- Fix
- Vendor advice: www.papercut.comLinks below, from CISA's entry.
What CISA says to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA's required action
What the flaw is
PaperCut NG/MF contains a cross-site request forgery (CSRF) vulnerability, which, under specific conditions, could potentially enable an attacker to alter security settings or execute arbitrary code.
CISA's description
A Cross-Site Request Forgery (CSRF) vulnerability has been identified in PaperCut NG/MF, which, under specific conditions, could potentially enable an attacker to alter security settings or execute arbitrary code. This could be exploited if the target is an admin with a current login session. Exploiting this would typically involve the possibility of deceiving an admin into clicking a specially crafted malicious link, potentially leading to unauthorized changes.
The CVE record's description, from Fluid Attacks
- CVE published
- 20 June 2023
- Assigned by
- Fluid Attacks
- CVSS
- 8.4 High (CVSS 3.1, from the CNA)
- CWE-352
- Cross-Site Request Forgery (CSRF)
- CISA SSVC, exploitation
- active
- CISA SSVC, automatable
- no
- CISA SSVC, technical impact
- total
Timeline
- The CVE record was published.
- CISA added it to its list of exploited vulnerabilities.
- The US federal deadline to fix it.
NG/MF: other exploited entries
| Vulnerability | Product | Our group | Listed | Deadline | EPSS |
|---|---|---|---|---|---|
| CVE-2023-27351Improper Authentication | PaperCut NG/MF | Patch nowRansomware use, listed within a year | 0.78 | ||
| CVE-2026-81578Missing Authentication for Critical Function | PaperCut NG/MF | Patch this weekMetasploit module; EPSS 0.85 | 0.85 | ||
| CVE-2026-82078Unsafe Reflection | PaperCut NG/MF | Patch this weekMetasploit module; EPSS 0.61 | 0.61 |
Read further
- CVE recordcve.org
- NVD entrynvd.nist.gov
- CISA's catalogcisa.gov
- EPSS for this CVEapi.first.org