How severe is CVE-2025-55498?

CVE-2025-55498 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-55498 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55498?

CVE-2025-55498 affects Tenda Ac6 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-55498?

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

Does CVE-2025-55498 have an EU (EUVD) identifier?

Yes. CVE-2025-55498 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25319.

When was CVE-2025-55498 published?

CVE-2025-55498 was published on 2025-08-20 and last updated on 2026-06-17.

CVE-2025-55498

CVE-2025-55498 is a high-severity vulnerability in Tenda Ac6 Firmware with a CVSS 3.x base score of 7.5. 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-121.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25319
Weakness: CWE-121
Affected product: Tenda Ac6 Firmware
Published: 2025-08-20
Last modified: 2026-06-17

Description

Tenda AC6 V15.03.06.23_multi was discovered to contain a buffer overflow via the time parameter in the fromSetSysTime function.

Frequently asked questions

What is CVE-2025-55498?: Tenda AC6 V15.03.06.23_multi was discovered to contain a buffer overflow via the time parameter in the fromSetSysTime function.
How severe is CVE-2025-55498?: CVE-2025-55498 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-55498 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55498?: CVE-2025-55498 affects Tenda Ac6 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-55498?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-55498 have an EU (EUVD) identifier?: Yes. CVE-2025-55498 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25319.
When was CVE-2025-55498 published?: CVE-2025-55498 was published on 2025-08-20 and last updated on 2026-06-17.

References

https://github.com/SolitaryGrass/IoT_vuln/blob/main/tenda/AC6/AC6V2.0RTL_V15.03.06.23/fromSetSysTime/poc.md

Affected products (1)

cpe:2.3:o:tenda:ac6_firmware:15.03.06.23_multi:*:*:*:*:*:*:*

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