RCE in TP-Link Archer C20i
CVE-2021-44827
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.540 (99.0th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.540 · newest: 0.540 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.tp-link.com/us/security (Vendor Advisory)
- Full-Disclosure.eu (Exploit, Third Party Advisory)
- full-disclosure.eu/reports/2022/CVE-2021-44827-tplink-authenticated-remote-code… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-44827?
- CVE-2021-44827 is a high-severity vulnerability in TP-Link Archer C20i, classified under OS Command Injection. CVSS score: 8.8/10. Published 2022-03-04.
- How severe is CVE-2021-44827?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-44827 known to be exploited?
- 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.