CVE-2023-53894

Name: CVE-2023-53894
Creator: NVD / NIST
Published: 2025-12-16T17:16:01.55+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.3/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2023-53894 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. phpfm 1.7.9 contains an authentication bypass vulnerability that allows attackers to log in by exploiting loose type comparison in password hash validation. Attackers can craft specific password hashes beginning with 0e or 00e to bypass authentication and upload malicious PHP files to the server.. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

phpfm 1.7.9 contains an authentication bypass vulnerability that allows attackers to log in by exploiting loose type comparison in password hash validation. Attackers can craft specific password hashes beginning with 0e or 00e to bypass authentication and upload malicious PHP files to the server.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

9.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.55%

42.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1390

Affected Software

Vendor	Product	Versions
Dulldusk	Phpfilemanager	1.7.9

References

https://www.dulldusk.com/phpfm/Product
https://www.exploit-db.com/exploits/51594Exploit, Third Party Advisory
https://www.vulncheck.com/advisories/phpfm-authentication-bypass-via-type-juggling-vulnerabilityThird Party Advisory

Timeline

Published: Dec 16, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-53894?

How severe is CVE-2023-53894?

CVE-2023-53894 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2023-53894?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-53894?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST