CVE-2025-70952

HighPublic PoC

Published: 25 March 2026

Published

25 March 2026

Modified

01 April 2026

KEV Added

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Patch

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CVSS Score 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Score 0.0044 63.3th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-70952 is a high-severity Path Traversal (CWE-22) vulnerability in Pf4J Project Pf4J. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 36.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-2 Flaw Remediation good match

prevent

Directly addresses the CVE by requiring timely identification, reporting, and patching of the path traversal flaw in pf4j's extract() function to the fixed commit 20c2f80.

SI-10 Information Input Validation good match

prevent

Mandates validation of zip entry names at extraction points to block directory traversal and Zip Slip attacks due to improper path normalization.

SC-5 Denial-of-service Protection partial match

prevent

Provides denial-of-service protections such as resource limits to mitigate availability disruptions from malicious ZIP extraction leading to exhaustion or crashes.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1499.004 Application or System Exploitation Impact

Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users.

attack.mitre.org →

Why these techniques?

Path traversal in ZIP extraction (Zip Slip) allows remote supply of malicious archive leading to application/system DoS via exploitation; matches public-facing app exploitation and endpoint DoS via software vuln.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v18.1

NVD Description

pf4j before 20c2f80 has a path traversal vulnerability in the extract() function of Unzip.java, where improper handling of zip entry names can allow directory traversal or Zip Slip attacks, due to a lack of proper path normalization and validation.

Deeper analysisAI

CVE-2025-70952 is a path traversal vulnerability, also known as a Zip Slip attack, affecting pf4j versions prior to commit 20c2f80. The issue resides in the extract() function of Unzip.java, where zip entry names are not properly normalized or validated, enabling directory traversal. Published on 2026-03-25, it has a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) and is associated with CWE-22: Improper Limitation of a Pathname to a Restricted Directory.

Remote unauthenticated attackers can exploit this vulnerability over the network with low complexity and no user interaction required. By supplying a malicious ZIP archive, attackers can traverse directories during extraction, leading to high-impact denial of service through availability disruption, such as resource exhaustion or application crashes, without affecting confidentiality or integrity.

Mitigation involves updating to pf4j commit 20c2f80089d1ea779e22c2de5f109a0bce4e1b14 or later, which addresses the path normalization deficiency. Details are documented in GitHub issues #618 and #623, along with a related gist providing additional context.