CVE-2025-50975: IPFire 2.29 web-based firewall interface (firewall.cgi) fails to sanitize several rule parameters such as PROT

Routine

MEDIUM 5.4DOWNGRADE

CVE-2025-50975 is a medium-severity flaw (CVSS 5.4) affecting ipfire. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-08-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ipfire

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-08-26 19:15 UTCPublished CVE record published
2026-06-17 09:35 UTCUpdated Record last modified

ipfire ipfire DOWNGRADE

Affected: 2.29

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.29

1. Check installed version

apt-cache policy ipfire || rpm -q ipfire || ipfire --version

2. No fixed release: DOWNGRADE to a release before 2.29 (Debian / Ubuntu)

apt-cache madison ipfire sudo apt install ipfire=<VERSION_BEFORE_2.29> sudo apt-mark hold ipfire

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ipfire sudo dnf downgrade ipfire-<VERSION_BEFORE_2.29> sudo dnf versionlock add ipfire

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-50975?

ipfire: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-50975 being exploited?

CVE-2025-50975 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-50975 affect?

CVE-2025-50975 affects ipfire. Severity is medium (CVSS 5.4). 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 i

How urgent is CVE-2025-50975?

Priority 29/100. Public exploit reference

Related CVEs

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CVE-2025-34304 MEDIUM 6.5 UPGRADE IPFire versions prior to 2.29 (Core Update 198) contain a SQL injection vulnerability that allows an authentic
CVE-2025-34302 MEDIUM 5.4 UPGRADE IPFire versions prior to 2.29 (Core Update 198) contain a stored cross-site scripting (XSS) vulnerability that
CVE-2025-34303 MEDIUM 5.4 UPGRADE IPFire versions prior to 2.29 (Core Update 198) contain a stored cross-site scripting (XSS) vulnerability that

References

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