CVE-2023-0782: Tenda AC23 httpd formGetSysToolDDNS out-of-bounds write

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-02-11 · updated 2026-06-17
Weakness: CWE-787

Description

A vulnerability was found in Tenda AC23 16.03.07.45 and classified as critical. Affected by this issue is the function formSetSysToolDDNS/formGetSysToolDDNS of the file /bin/httpd. The manipulation leads to out-of-bounds write. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-220640.

Affected products

Tenda AC23: 16.03.07.45

References

https://github.com/jingping911/tendaAC23overflow/blob/main/README.md
https://vuldb.com/?ctiid.220640
https://vuldb.com/?id.220640
https://github.com/jingping911/tendaAC23overflow/blob/main/README.md
https://vuldb.com/?ctiid.220640
https://vuldb.com/?id.220640

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