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TI-2021-10089 Aliases CVE-2021-29302GHSA-77gh-mcmc-pvr3

TP-Link TL-WR802N(US), Archer_C50v5_US v4_200 <= 2020.06 contains a buffer overflow…

Priority MEDIUM 44CWE-120Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

TP-Link TL-WR802N(US), Archer_C50v5_US v4_200 <= 2020.06 contains a buffer overflow vulnerability in the httpd process in the body message. The attack vector is: The attacker can get shell of the router by sending a message through the network, which may lead to remote code execution.

Why it matters now

EPSS 0.05914 93rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:tp-link:tl-wr802n_firmware:*:*:*:*:*:*:*:*up to 2020.06VulnerableTP-Link
cpe:2.3:h:tp-link:tl-wr802n:v4:*:*:*:*:*:*:*v4Running onTP-Link
  • cpe:2.3:o:tp-link:tl-wr802n_firmware:*:*:*:*:*:*:*:* Versions up to 2020.06 Vulnerable ·TP-Link
  • cpe:2.3:h:tp-link:tl-wr802n:v4:*:*:*:*:*:*:* Versions v4 Running on ·TP-Link

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-29302
  2. 2026-10-03 Alias added: GHSA-77gh-mcmc-pvr3

References

Exploit 1

Advisory 1

Other 1

  • TI-2026-02790 Authenticated Command Injection on TP-Link TL-WR802N, TL-WR841N and TL-WR840N CVSS 4.0HIGH 8.5
  • TI-2021-03018 TP-Link wifi router TL-WR802N V4(JP), with firmware version prior to 211202, is vulnerable to OS command injection. CVSS 3.1HIGH 8.8
  • TI-2023-18330 OS command injection in TP-Link TL-WR802N CVSS 3.1HIGH 8.8
  • TI-2021-02295 Unauthenticated stored cross-site scripting (XSS) exists in multiple TP-Link products… CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences