How severe is CVE-2025-34319?

CVE-2025-34319 has a CVSS 4.0 base score of 9.3, rated critical severity.

Is CVE-2025-34319 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-34319?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-34319 have an EU (EUVD) identifier?

Yes. CVE-2025-34319 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201000.

When was CVE-2025-34319 published?

CVE-2025-34319 was published on 2025-12-03 and last updated on 2026-06-17.

CVE-2025-34319

CVE-2025-34319 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.3. 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-78.

Key facts

Severity: Critical (CVSS 4.0 base score 9.3)
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-201000
Weakness: CWE-78
Published: 2025-12-03
Last modified: 2026-06-17

Description

TOTOLINK N300RT wireless router firmware versions prior to V3.4.0-B20250430 (discovered in V2.1.8-B20201030.1539) contain an OS command injection vulnerability in the Boa formWsc handling functionality. An unauthenticated attacker can send specially crafted requests to trigger command execution via the targetAPSsid request parameter.

Frequently asked questions

What is CVE-2025-34319?: TOTOLINK N300RT wireless router firmware versions prior to V3.4.0-B20250430 (discovered in V2.1.8-B20201030.1539) contain an OS command injection vulnerability in the Boa formWsc handling functionality. An unauthenticated attacker can send specially crafted requests to trigger command execution via the targetAPSsid request parameter.
How severe is CVE-2025-34319?: CVE-2025-34319 has a CVSS 4.0 base score of 9.3, rated critical severity.
Is CVE-2025-34319 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-34319?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-34319 have an EU (EUVD) identifier?: Yes. CVE-2025-34319 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201000.
When was CVE-2025-34319 published?: CVE-2025-34319 was published on 2025-12-03 and last updated on 2026-06-17.

References

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