What’s Vulnerable › Vulnerabilities

CVE-2020-28877

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-11-20 · updated 2026-06-17
• Weakness: CWE-120

Description

Buffer overflow in in the copy_msg_element function for the devDiscoverHandle server in the TP-Link WR and WDR series, including WDR7400, WDR7500, WDR7660, WDR7800, WDR8400, WDR8500, WDR8600, WDR8620, WDR8640, WDR8660, WR880N, WR886N, WR890N, WR890N, WR882N, and WR708N.

Affected products

• TP-Link Wdr7400 Firmware: all versions
• TP-Link Wdr7500 Firmware: all versions
• TP-Link Wdr7660 Firmware: all versions
• TP-Link Wdr7800 Firmware: all versions
• TP-Link Wdr8400 Firmware: all versions
• TP-Link Wdr8500 Firmware: all versions
• TP-Link Wdr8600 Firmware: all versions
• TP-Link Wdr8620 Firmware: all versions
• TP-Link Wdr8640 Firmware: all versions
• TP-Link Wdr8660 Firmware: all versions
• TP-Link Wr708N Firmware: all versions
• TP-Link Wr880N Firmware: all versions
• TP-Link Wr882N Firmware: all versions
• TP-Link Wr886N Firmware: all versions
• TP-Link Wr890N Firmware: all versions

References

• https://github.com/peanuts62/TP-Link-poc
• https://exchange.xforce.ibmcloud.com/vulnerabilities/192112
• https://github.com/peanuts62/TP-Link-poc

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