CVE-2022-40843W15e Firmware Vulnerability
The Tenda AC1200 V-W15Ev2 V15.11.0.10(1576) router is vulnerable to improper authorization / improper session management that allows the router login page to be bypassed.
Published Nov 14, 2022 · Updated Jul 7, 2025
Key Facts
Patch immediately- CVE-2022-40843 is a medium-severity vulnerability (CVSS 4.9 v3.1) affecting W15e Firmware (Tenda).
- It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Jun 5, 2025. No public exploit code is known.
- EPSS estimates a 29% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
4.9
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
EPSS (30-day exploit likelihood)
29%
Higher than 98.1% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
40/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Jun 5, 2025
934 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
11
Reports of active use
Description
The Tenda AC1200 V-W15Ev2 V15.11.0.10(1576) router is vulnerable to improper authorization / improper session management that allows the router login page to be bypassed. This leads to authenticated attackers having the ability to read the routers syslog.log file which contains the MD5 password of the Administrator's user account.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CIRCL KEV | Jun 5, 2025 | n/a | Not reported |
| Industry KEV feed | Jun 5, 2025 | n/a | Not reported |
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| W15e FirmwareTenda | 15.11.0.10\(1576\) | n/a |
Timeline
Publicly disclosed
Nov 14, 2022
Added to CIRCL KEV
Jun 5, 2025
Added to Industry KEV feed
Jun 5, 2025
Last updated
Jul 7, 2025
References
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
The Tenda AC1200 V-W15Ev2 V15.11.0.10(1576) router is vulnerable to improper authorization / improper session management that allows the router login page to be bypassed.
Affected: W15e Firmware (Tenda) versions 15.11.0.10\(1576\). The full list is in the CVE brief.
It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Jun 5, 2025.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2022-40843 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
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