CVE-2022-40843

Exp

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.

Published: 2022-11-15 Last update: 2025-07-07 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-40843 is rated High Exploit Risk (73.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 40.40%, 97th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +26.96% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2022-40843

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2022-40843

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 13.44% 40.40% +26.96%
2 2025-11-18 40.40% 13.44% -26.96%
3 2025-11-16 — 40.40% —

Full EPSS history (32 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-40843

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.2 3.6 [email protected]

Weakness enumeration for CVE-2022-40843

Affected software / configurations for CVE-2022-40843

Vendor Product Version Raw CPE
tenda w15e_firmware 15.11.0.10\(1576\) cpe:2.3:o:tenda:w15e_firmware:15.11.0.10\(1576\):*:*:*:*:*:*:*

References for CVE-2022-40843

URL Tags
https://boschko.ca/tenda_ac1200_router/ Exploit Technical Description Third Party Advisory
cvelogic Threat Intelligence