How severe is CVE-2025-34309?

CVE-2025-34309 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-2025-34309 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-34309?

CVE-2025-34309 primarily affects Ipfire. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-34309?

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

Does CVE-2025-34309 have an EU (EUVD) identifier?

Yes. CVE-2025-34309 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-36516.

When was CVE-2025-34309 published?

CVE-2025-34309 was published on 2025-10-28 and last updated on 2026-06-17.

CVE-2025-34309

CVE-2025-34309 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)
CVSS v4: 5.1
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-36516
Weakness: CWE-79
Affected product: Ipfire
Published: 2025-10-28
Last modified: 2026-06-17

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 SERVICE, LOGIN, and PASSWORD parameters when creating or editing a Dynamic DNS host. When a new Dynamic DNS host is added, the application issues an HTTP POST request to /cgi-bin/ddns.cgi and saves the values of the LOGIN, PASSWORD, and SERVICE parameters. The SERVICE value is displayed after the host entry is created, and the LOGIN and PASSWORD values are displayed when that host entry is edited. The values of these parameters are 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 or edit the affected Dynamic DNS entries.

Frequently asked questions

What is CVE-2025-34309?: 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 SERVICE, LOGIN, and PASSWORD parameters when creating or editing a Dynamic DNS host. When a new Dynamic DNS host is added, the application issues an HTTP POST request to /cgi-bin/ddns.cgi and saves the values of the LOGIN, PASSWORD, and SERVICE parameters. The SERVICE value is displayed after the host entry is created, and the LOGIN and PASSWORD values are displayed when that host entry is edited. The values of these parameters are 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 or edit the affected Dynamic DNS entries.
How severe is CVE-2025-34309?: CVE-2025-34309 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-2025-34309 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-34309?: CVE-2025-34309 primarily affects Ipfire. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-34309?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-34309 have an EU (EUVD) identifier?: Yes. CVE-2025-34309 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-36516.
When was CVE-2025-34309 published?: CVE-2025-34309 was published on 2025-10-28 and last updated on 2026-06-17.

References

Affected products (16)

cpe:2.3:a:ipfire:ipfire:*:*:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update183:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update184:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update185:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update186:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update187:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update188:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update189:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update190:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update191:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update192:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update193:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update194:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update195:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update196:*:*:*:*:*:*
cpe:2.3:a:ipfire:ipfire:2.29:core_update197:*:*:*:*:*:*

More vulnerabilities in Ipfire

CVE-2025-34312 — High (CVSS 8.8): IPFire versions prior to 2.29 (Core Update 198) contain a command injection vulnerability that allows an authenticated…
CVE-2025-34311 — High (CVSS 8.8): IPFire versions prior to 2.29 (Core Update 198) contain a command injection vulnerability that allows an authenticated…
CVE-2021-33393 — High (CVSS 8.8): lfs/backup in IPFire 2.25-core155 does not ensure that /var/ipfire/backup/bin/backup.pl is owned by the root account.…
CVE-2018-16232 — High (CVSS 8.8): An authenticated command injection vulnerability exists in IPFire Firewall before 2.21 Core Update 124 in backup.cgi.…
CVE-2017-9757 — High (CVSS 8.8): IPFire 2.19 has a Remote Command Injection vulnerability in ids.cgi via the OINKCODE parameter, which is mishandled by…
CVE-2025-34304 — Medium (CVSS 6.5): IPFire versions prior to 2.29 (Core Update 198) contain a SQL injection vulnerability that allows an authenticated…

All CVEs affecting Ipfire →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →