CVE-2025-5439

CVE-2025-5439 is a medium-severity vulnerability in Linksys Re9000 Firmware with a CVSS 3.x base score of 6.3. 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-77.

Key facts

Description

A vulnerability was found in Linksys RE6500, RE6250, RE6300, RE6350, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. It has been rated as critical. Affected by this issue is the function verifyFacebookLike of the file /goform/verifyFacebookLike. The manipulation of the argument uid/accessToken leads to os command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2025-5439?
A vulnerability was found in Linksys RE6500, RE6250, RE6300, RE6350, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. It has been rated as critical. Affected by this issue is the function verifyFacebookLike of the file /goform/verifyFacebookLike. The manipulation of the argument uid/accessToken leads to os command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2025-5439?
CVE-2025-5439 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-5439 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-5439?
CVE-2025-5439 primarily affects Linksys Re9000 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-5439?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-5439 have an EU (EUVD) identifier?
Yes. CVE-2025-5439 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16630.
When was CVE-2025-5439 published?
CVE-2025-5439 was published on 2025-06-02 and last updated on 2026-06-17.

References

Affected products (6)

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