9

CVE-2021-44827: tp-link archer_c20i_firmware OS Command Injection

CVSS: 9.0v2.0HighModified
Published 04-03-2022Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-44827 is a high (CVSS 9.0) OS Command Injection vulnerability in tp-link archer_c20i_firmware. EPSS estimates a 53.96% chance of exploitation in the next 30 days, higher than 99% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.0/10
010
High · v2.0 (NVD)
EPSS score
53.96%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference

Timeline

  1. 04-03-2022
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

There is remote authenticated OS command injection on TP-Link Archer C20i 0.9.1 3.2 v003a.0 Build 170221 Rel.55462n devices vie the X_TP_ExternalIPv6Address HTTP parameter, allowing a remote attacker to run arbitrary commands on the router with root privileges.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

53.96%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

0.00 pp

From 53.96% on 21-09-2026

21-09-202621-10-2026
EPSS score
53.96%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • referenceUnverified

    Exploit Reference (full-disclosure.eu)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (full-disclosure.eu)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Tp-link1 product

1 vendor · 1 product

References

3 links