TP-link TL-WA855RE Missing Authentication for Critical Function Vulnerability
TP-Link TL-WA855RE V5 20200415-rel37464 devices allow an unauthenticated attacker (on the same network) to submit a TDDP_RESET POST request for a factory reset and reboot. The attacker can then obtain incorrect access control by setting a…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 3 / 5
- KEV catalog (CISA)02 Sept 2025
- Exploited in EUVD (ENISA)02 Sept 2025
- Used by ransomwareno
- EPSS above 10 %22.2%
- No account, over the networkno
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
TP-Link TL-WA855RE V5 20200415-rel37464 devices allow an unauthenticated attacker (on the same network) to submit a TDDP_RESET POST request for a factory reset and reboot. The attacker can then obtain incorrect access control by setting a new administrative password.
Affected products
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
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EPSS peak: 22.2%
References
Other exploited vulnerabilities from the same vendor
- CVE-2025-9377TP-Link Archer C7(EU) and TL-WR841N/ND(MS) OS Command Injection Vulnerability6.5 · Background exploitation
- CVE-2023-50224TP-Link TL-WR841N Authentication Bypass by Spoofing Vulnerability5.0 · Background exploitation
- CVE-2023-33538TP-Link Multiple Routers Command Injection Vulnerability6.6 · Background exploitation
- CVE-2023-1389TP-Link Archer AX-21 Command Injection Vulnerability8.3 · Background exploitation
- CVE-2015-3035TP-Link Multiple Archer Devices Directory Traversal Vulnerability7.9 · Background exploitation