CVE-2021-42659: tenda ac9_firmware

Vulnerability summary

CVE-2021-42659 is a medium (CVSS 6.5) vulnerability in tenda ac9_firmware. EPSS estimates a 0.82% chance of exploitation in the next 30 days, higher than 56.7% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 24-05-2022
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

There is a buffer overflow vulnerability in the Web server httpd of the router in Tenda router devices such as Tenda AC9 V1.0 V15.03.02.19(6318) and Tenda AC9 V3.0 V15.03.06.42_multi. When setting the virtual service, the httpd program will crash and exit when the super-long list parameter occurs.

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.