How severe is CVE-2025-45427?

CVE-2025-45427 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-2025-45427 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-45427?

CVE-2025-45427 affects Tenda Ac9 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-45427?

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-2025-45427 have an EU (EUVD) identifier?

Yes. CVE-2025-45427 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12193.

When was CVE-2025-45427 published?

CVE-2025-45427 was published on 2025-04-23 and last updated on 2026-06-17.

CVE-2025-45427

CVE-2025-45427 is a critical-severity vulnerability in Tenda Ac9 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-121.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12193
Weakness: CWE-121
Affected product: Tenda Ac9 Firmware
Published: 2025-04-23
Last modified: 2026-06-17

Description

In Tenda AC9 v1.0 with firmware V15.03.05.14_multi, the security parameter of /goform/WifiBasicSet has a stack overflow vulnerability, which can lead to remote arbitrary code execution.

Frequently asked questions

What is CVE-2025-45427?: In Tenda AC9 v1.0 with firmware V15.03.05.14_multi, the security parameter of /goform/WifiBasicSet has a stack overflow vulnerability, which can lead to remote arbitrary code execution.
How severe is CVE-2025-45427?: CVE-2025-45427 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-2025-45427 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-45427?: CVE-2025-45427 affects Tenda Ac9 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-45427?: 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-2025-45427 have an EU (EUVD) identifier?: Yes. CVE-2025-45427 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12193.
When was CVE-2025-45427 published?: CVE-2025-45427 was published on 2025-04-23 and last updated on 2026-06-17.

References

https://github.com/shuqi233/loophole/blob/main/Tenda%20AC9/WifiBasicSet-security.md

Affected products (1)

cpe:2.3:o:tenda:ac9_firmware:15.03.05.14_multi:*:*:*:*:*:*:*

More vulnerabilities in Tenda Ac9 Firmware

CVE-2025-45042 — Critical (CVSS 9.8): Tenda AC9 v15.03.05.14 was discovered to contain a command injection vulnerability via the Telnet function.
CVE-2025-44877 — Critical (CVSS 9.8): Tenda AC9 V15.03.06.42_multi was found to contain a command injection vulnerability in the formSetSambaConf function…
CVE-2025-44872 — Critical (CVSS 9.8): Tenda AC9 V15.03.06.42_multi was found to contain a command injection vulnerability in the formsetUsbUnload function…
CVE-2025-45429 — Critical (CVSS 9.8): In the Tenda ac9 v1.0 router with firmware V15.03.05.14_multi, there is a stack overflow vulnerability in…
CVE-2025-45428 — Critical (CVSS 9.8): In Tenda ac9 v1.0 with firmware V15.03.05.14_multi, the rebootTime parameter of /goform/SetSysAutoRebbotCfg has a stack…
CVE-2025-29386 — Critical (CVSS 9.8): In Tenda AC9 v1.0 V15.03.05.14_multi, the mac parameter of /goform/AdvSetMacMtuWan has a stack overflow vulnerability,…

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