Is CVE-2023-53894 in the CISA KEV catalog?

No. CVE-2023-53894 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-53894?

CVE-2023-53894 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2023-53894?

CVE-2023-53894 has an EPSS score of 0.56% (43th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2023-53894?

No published fix for CVE-2023-53894 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2023-53894

CRITICAL

9.8

CVSS v3

NVD

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.

CWE-1390

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.56%probability of exploitation in 30 days

43rdpercentile

Moderate risk: more likely to be exploited than 43% of all known CVEs.

References

Exploit1

exploit-db.com

Third-Party Advisory1

vulncheck.com

Product1

dulldusk.com

Related Vulnerabilities

Other CWE-1390 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-40554	Critical	9.8	58%	-	Fix
CVE-2025-40552	Critical	9.8	50%	-	Fix
CVE-2025-27740	High	8.8	3.2%	-	Fix
CVE-2024-49019	High	7.8	2.0%	-	Fix
CVE-2024-38239	High	7.2	1.7%	-	Fix
CVE-2025-26635	Medium	6.5	1.4%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-21.