CVE-2021-27209
In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a...
In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a base64 format over cleartext HTTP.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a base64 format over cleartext HTTP.
- Record
CVE-2021-27209- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - CVSS 2.0
- 3.6 Low
AV:L/AC:L/Au:N/C:P/I:P/A:N - Weakness
- CWE-319
- Updated
- 2026-11-02
CVE ListNo score
In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a base64 format over cleartext HTTP.
- Record
CVE-2021-27209- Updated
- 2026-11-02
EUVDEUVD-2021-13974No score
In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a base64 format over cleartext HTTP.
- Record
EUVD-2021-13974- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4x53-4vwf-pv6fNo score
In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a...
In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a base64 format over cleartext HTTP.
- Record
GHSA-4x53-4vwf-pv6f- Weakness
- CWE-319
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-27209 is a high vulnerability (CVSS 7.1) in Tp-link Archer C5v Firmware, published February 13, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.24%, the 15th percentile. No source names a fixed version.