How severe is CVE-2025-50975?

CVE-2025-50975 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-50975 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-50975?

CVE-2025-50975 affects Ipfire. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-50975?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-50975 have an EU (EUVD) identifier?

Yes. CVE-2025-50975 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25817.

When was CVE-2025-50975 published?

CVE-2025-50975 was published on 2025-08-26 and last updated on 2026-06-17.

CVE-2025-50975

CVE-2025-50975 is a medium-severity vulnerability in Ipfire with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25817
Weakness: CWE-79
Affected product: Ipfire
Published: 2025-08-26
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-50975?: 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.
How severe is CVE-2025-50975?: CVE-2025-50975 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-50975 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-50975?: CVE-2025-50975 affects Ipfire. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-50975?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-50975 have an EU (EUVD) identifier?: Yes. CVE-2025-50975 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25817.
When was CVE-2025-50975 published?: CVE-2025-50975 was published on 2025-08-26 and last updated on 2026-06-17.

References

https://github.com/4rdr/proofs/blob/main/info/IPFire-2.29-Stored-XSS-via-Firewall.md

Affected products (1)

cpe:2.3:a:ipfire:ipfire:2.29:-:*:*:*:*:*:*

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