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CVE-2021-28857: TP-Link's TL-WPA4220 4.0.2 Build 20180308 Rel.37064 username and password are sent via the cookie.
CVE-2021-28857 · published 5 years ago
Summary
TP-Link's TL-WPA4220 4.0.2 Build 20180308 Rel.37064 username and password are sent via the cookie.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| tp-link | tl-wpa4220_firmware |
4.0.2 cpe:2.3:o:tp-link:tl-wpa4220_firmware:4.0.2:build_20180308_rel.37064:*:*:*:*:*:* |
Original advisory text
TP-Link's TL-WPA4220 4.0.2 Build 20180308 Rel.37064 username and password are sent via the cookie.
TP-Link's TL-WPA4220 4.0.2 Build 20180308 Rel.37064 username and password are sent via the cookie.
References
- https://yunus-shn.medium.com/tp-links-tl-wpa4220-v4-0-cleartext-credentials-in-c... Exploit Third Party Advisory
Internet-facing
14 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically (estimated)
- Gives an attacker partial control (estimated)
Type
CWE-522Insufficiently Protected Credentials
Timeline
Published15 Jun 2021
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2021-28857 · NVD
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