CVE-2021-44827
HighThere 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.
Published Mar 7, 2022 · Updated Aug 4, 2024 · Also known as TR-22-0198, TR-22-0199
Key Facts
Patch immediately- CVE-2021-44827 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Archer C20i Firmware (Tp-Link).
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 54% probability of exploitation in the next 30 days.
- Fixed versions are available, including Archer C20i Firmware <=170221, Archer C20i Firmware 170221.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
54%
Higher than 98.9% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
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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.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Archer C20i FirmwareTp-Link | See advisory | 170221 |
Patched Releases
Archer C20i Firmware
<=170221
Timeline
Publicly disclosed
Mar 7, 2022
Last updated
Aug 4, 2024
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-44827
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-0752
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-0831
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-0832
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-0838
FAQ
Common Questions.
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.
Affected: Archer C20i Firmware (Tp-Link). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Archer C20i Firmware <=170221, Archer C20i Firmware 170221.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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