CVE-2025-14526 Tenda CH22 L7Im frmL7ImForm buffer overflow
Remote attackers can trigger a buffer overflow in the Tenda CH22 router via the L7Im form, potentially leading to code execution or service disruption.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-14526?
CVE-2025-14526 is a high-severity memory corruption vulnerability in Tenda CH22, published on 11 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security flaw has been discovered in Tenda CH22 1.0.0.1. This affects the function frmL7ImForm of the file /goform/L7Im. Performing a manipulation of the argument page results in buffer overflow. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks.
Which versions are affected by CVE-2025-14526?
It affects 1 product.
Products include Tenda Ch22 Firmware.
How do I fix CVE-2025-14526?
No fix has been published for CVE-2025-14526 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-14526 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-14526 exists.
Other vulnerabilities in Tenda CH22
- CVE-2025-11418 Tenda CH22 HTTP Request AdvSetWrlsafeset formWrlsafeset stack-based overflow
- CVE-2025-11423 Tenda CH22 SafeEmailFilter formSafeEmailFilter memory corruption
- CVE-2026-5604 Tenda CH22 Parameter CertLocalPrecreate formCertLocalPrecreate stack-based overflow
- CVE-2026-5605 Tenda CH22 WrlExtraSet formWrlExtraSet stack-based overflow
- CVE-2026-5204 Tenda CH22 Parameter webtypelibrary formWebTypeLibrary stack-based overflow
Sources
Also known as GHSA-rh6w-m6gv-w9ff.