How severe is CVE-2025-45491?

CVE-2025-45491 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-45491 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-45491?

CVE-2025-45491 affects Linksys E5600 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-45491?

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-2025-45491 have an EU (EUVD) identifier?

Yes. CVE-2025-45491 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-13618.

When was CVE-2025-45491 published?

CVE-2025-45491 was published on 2025-05-06 and last updated on 2026-06-17.

CVE-2025-45491

CVE-2025-45491 is a critical-severity vulnerability in Linksys E5600 Firmware with a CVSS 3.x base score of 9.8. 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

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-13618
Weakness: CWE-77
Affected product: Linksys E5600 Firmware
Published: 2025-05-06
Last modified: 2026-06-17

Description

Linksys E5600 v1.1.0.26 was discovered to contain a command injection vulnerability in the runtime.ddnsStatus DynDNS function via the username parameter.

Frequently asked questions

What is CVE-2025-45491?: Linksys E5600 v1.1.0.26 was discovered to contain a command injection vulnerability in the runtime.ddnsStatus DynDNS function via the username parameter.
How severe is CVE-2025-45491?: CVE-2025-45491 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-45491 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-45491?: CVE-2025-45491 affects Linksys E5600 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-45491?: 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-2025-45491 have an EU (EUVD) identifier?: Yes. CVE-2025-45491 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-13618.
When was CVE-2025-45491 published?: CVE-2025-45491 was published on 2025-05-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:linksys:e5600_firmware:1.1.0.26:*:*:*:*:*:*:*

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