CVE-2022-4499: The strcmp function in TP-Link routers, Archer C5 and WR710N-V1, used for checking credentials in httpd, is susceptible to a side-channel attack.

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-01-11 · updated 2026-06-17
Weakness: CWE-203

Description

TP-Link routers, Archer C5 and WR710N-V1, using the latest software, the strcmp function used for checking credentials in httpd, is susceptible to a side-channel attack. By measuring the response time of the httpd process, an attacker could guess each byte of the username and password.

Affected products

TP-Link Archer C5 Firmware: 2_160201_us
TP-Link Tl-Wr710N Firmware: 1_151022_us

References

https://kb.cert.org/vuls/id/572615
https://kb.cert.org/vuls/id/572615
https://www.kb.cert.org/vuls/id/572615

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