How severe is CVE-2025-9812?

CVE-2025-9812 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-9812 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-9812?

CVE-2025-9812 affects Tenda Ch22 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-9812?

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-2025-9812 have an EU (EUVD) identifier?

Yes. CVE-2025-9812 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26390.

When was CVE-2025-9812 published?

CVE-2025-9812 was published on 2025-09-02 and last updated on 2026-06-17.

CVE-2025-9812

CVE-2025-9812 is a high-severity vulnerability in Tenda Ch22 Firmware with a CVSS 3.x base score of 8.8. 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-119.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 7.4
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-26390
Weakness: CWE-119
Affected product: Tenda Ch22 Firmware
Published: 2025-09-02
Last modified: 2026-06-17

Description

A vulnerability was determined in Tenda CH22 1.0.0.1. This vulnerability affects the function formexeCommand of the file /goform/exeCommand. Executing manipulation of the argument cmdinput can lead to buffer overflow. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized.

Frequently asked questions

What is CVE-2025-9812?: A vulnerability was determined in Tenda CH22 1.0.0.1. This vulnerability affects the function formexeCommand of the file /goform/exeCommand. Executing manipulation of the argument cmdinput can lead to buffer overflow. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized.
How severe is CVE-2025-9812?: CVE-2025-9812 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-9812 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-9812?: CVE-2025-9812 affects Tenda Ch22 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-9812?: 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-2025-9812 have an EU (EUVD) identifier?: Yes. CVE-2025-9812 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26390.
When was CVE-2025-9812 published?: CVE-2025-9812 was published on 2025-09-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:ch22_firmware:1.0.0.1:*:*:*:*:*:*:*

More vulnerabilities in Tenda Ch22 Firmware

CVE-2025-11423 — Critical (CVSS 9.8): A vulnerability was found in Tenda CH22 1.0.0.1. This affects the function formSafeEmailFilter of the file…
CVE-2025-11418 — Critical (CVSS 9.8): A security vulnerability has been detected in Tenda CH22 up to 1.0.0.1. This issue affects the function formWrlsafeset…
CVE-2024-46045 — Critical (CVSS 9.8): Tenda CH22 V1.0.0.6(468) has a stack overflow vulnerability located in the frmL7PlotForm function.
CVE-2024-46044 — Critical (CVSS 9.8): CH22 V1.0.0.6(468) has a stack overflow vulnerability located in the fromqossetting function.
CVE-2026-5605 — High (CVSS 8.8): A weakness has been identified in Tenda CH22 1.0.0.1. This affects the function formWrlExtraSet of the file…
CVE-2026-5604 — High (CVSS 8.8): A security flaw has been discovered in Tenda CH22 1.0.0.1. The impacted element is the function formCertLocalPrecreate…

All CVEs affecting Tenda Ch22 Firmware →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

CVE-2026-77946 — Critical (CVSS 10.0): A vulnerability was determined in TRENDnet TEW-821DAP 2.2.01b05. Affected by this vulnerability is the function…
CVE-2026-76008 — Critical (CVSS 10.0): A flaw has been found in Comfast CF-N1-S 2.6.0.1. This affects the function get_para_from_uri of the file…
CVE-2026-75784 — Critical (CVSS 10.0): A vulnerability was detected in TRENDnet TEW-WLC100 1v2.07b01. Affected by this issue is the function FUN_0040da4c of…
CVE-2026-74843 — Critical (CVSS 10.0): A vulnerability was determined in Wavlink WN531P3 and WN535M1 V250922. Affected by this vulnerability is the function…
CVE-2026-16367 — Critical (CVSS 10.0): Sandbox escape due to invalid pointer in the Disability Access APIs component. This vulnerability was fixed in Firefox…
CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →