CVE-2025-50975

Name: CVE-2025-50975
Creator: NVD / NIST
Published: 2025-08-26T19:15:45.073+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.28%

Last modified Jun 17, 2026

CVE-2025-50975 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. IPFire 2.29 web-based firewall interface (firewall.cgi) fails to sanitize several rule parameters such as PROT, SRC_PORT, TGT_PORT, dnatport, key, ruleremark, src_addr, std_net_tgt, and tgt_addr, allowing an authenticated administrator to inject persistent JavaScript. This stored XSS payload is executed whenever another admin views the firewall rules page, enabling session hijacking, unauthorized actions within the interface, or further internal pivoting. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

IPFire 2.29 web-based firewall interface (firewall.cgi) fails to sanitize several rule parameters such as PROT, SRC_PORT, TGT_PORT, dnatport, key, ruleremark, src_addr, std_net_tgt, and tgt_addr, allowing an authenticated administrator to inject persistent JavaScript. This stored XSS payload is executed whenever another admin views the firewall rules page, enabling session hijacking, unauthorized actions within the interface, or further internal pivoting. Exploitation requires only high-privilege GUI access, and the complexity of the attack is low.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.28%

20.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Ipfire	Ipfire	2.29

References

https://github.com/4rdr/proofs/blob/main/info/IPFire-2.29-Stored-XSS-via-Firewall.mdExploit, Third Party Advisory
https://github.com/4rdr/proofs/blob/main/info/IPFire-2.29-Stored-XSS-via-Firewall.mdExploit, Third Party Advisory

Timeline

Published: Aug 26, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-50975?

How severe is CVE-2025-50975?

CVE-2025-50975 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2025-50975?

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-2025-50975?

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

Scan your code now

Source: NVD / NIST