Vulnerability · Published Oct 28, 2025 · Assigned by VulnCheck

CVE-2025-34308IPFire < v2.29 Stored XSS via Default Time Sync

Medium 5.1

In plain English

A medium-severity cross-site scripting in IPFire from IPFire.org. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities).

Severity (CVSS 4.0)5.1Medium

Exploit odds (30 days)0.5%top 58.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

IPFire versions prior to 2.29 (Core Update 198) contain a stored cross-site scripting (XSS) vulnerability that allows an authenticated attacker to inject arbitrary JavaScript code through the UPDATE_VALUE parameter when updating the default time synchronization settings. When the default values displayed on the Time Server page are updated, the application issues an HTTP POST request to /cgi-bin/time.cgi, and the synchronization value is provided in the UPDATE_VALUE parameter. The value of this parameter is stored and later rendered in the web interface without proper sanitation or encoding, allowing injected scripts to execute in the context of other users who view the affected Time Server configuration page.

Affected products (as reported)

Vendor	Product	Versions
IPFire.org	IPFire	0 – before 2.29 (Core Update 198)

Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

References

https://www.ipfire.org/blog/ipfire-2-29-core-update-198-released vendor-advisory, patch
https://bugzilla.ipfire.org/show_bug.cgi?id=13883 issue-tracking
https://www.vulncheck.com/advisories/ipfire-stored-xss-via-default-time-sync third-party-advisory