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CVE-2022-40942

34
FAUCET Score

CVE-2022-40942 is a critical stack overflow vulnerability affecting Tenda TX3 routers running firmware version US_TX3V1.0br_V16.03.13.11, specifically within the compare_parentcontrol_time function. With a CVSS score of 9.8, it allows for unauthenticated remote attackers to achieve full compromise (confidentiality, integrity, and availability) with low attack complexity. Despite its severity, there is currently no public exploit code available, nor is it listed in CISA's KEV catalog, and it has received no community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
16.03.13.11CPE matchmatch criteria
cpe:2.3:o:tenda:tx3_firmware:16.03.13.11:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
8.15%
Probability of exploitation in next 30 days
EPSS Percentile
94.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0815 is in the 89th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / Rumble0x0/vulnerability/blob/main/tenda/TX3/stack%20overflow%20via%20compare_parentcontrol_time.pdf
ExploitThird Party Advisory