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CVE-2021-29302

26
FAUCET Score

CVE-2021-29302 is a buffer overflow vulnerability in the httpd process of TP-Link TL-WR802N(US) and Archer_C50v5_US v4_200 firmware versions <= 2020.06. This flaw allows an unauthenticated attacker to achieve remote code execution and gain a shell on the router by sending a specially crafted message over the network. Rated with a CVSS score of 8.1 (HIGH), the attack has high impact on confidentiality, integrity, and availability, but requires high attack complexity. Despite its severity, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2020.06CPE matchmatch criteria
cpe:2.3:o:tp-link:tl-wr802n_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.91%
Probability of exploitation in next 30 days
EPSS Percentile
92.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0591 is in the 65th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / liyansong2018/CVE/tree/main/2021/CVE-2021-29302
ExploitThird Party Advisory
static.tp-link.com / beta/2021/202103/20210319/TL-WR802Nv4_US_0.9.1_3.17_up_boot%5B210317-rel64474%5D.zip
tp-link.com / us/support/download/tl-wr802n
Vendor Advisory