CVE-2021-28857
HIGHCVSS 7.5/10EPSS 1.26%
Last modified
CVE-2021-28857 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. TP-Link's TL-WPA4220 4.0.2 Build 20180308 Rel.37064 username and password are sent via the cookie.. EPSS estimates a 1.26% chance of exploitation in the next 30 days.
Description
TP-Link's TL-WPA4220 4.0.2 Build 20180308 Rel.37064 username and password are sent via the cookie.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Tp-Link | Tl-Wpa4220 Firmware | 4.0.2 | Build 20180308 Rel.37064 |
References
- https://yunus-shn.medium.com/tp-links-tl-wpa4220-v4-0-cleartext-credentials-in-cookie-7516a2649394Exploit, Third Party Advisory
- https://yunus-shn.medium.com/tp-links-tl-wpa4220-v4-0-cleartext-credentials-in-cookie-7516a2649394Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-28857?
TP-Link's TL-WPA4220 4.0.2 Build 20180308 Rel.37064 username and password are sent via the cookie.
How severe is CVE-2021-28857?
CVE-2021-28857 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.26% probability of exploitation in the next 30 days.
How do I fix CVE-2021-28857?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-28857?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST