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CVE-2026-5349

33
FAUCET Score

CVE-2026-5349 is a high-severity stack-based buffer overflow (CVSS 8.8) affecting the Trendnet TEW-657BRM 1.00.1 router, specifically in the add_apcdb function of /setup.cgi. This vulnerability allows a remote attacker with low privileges to achieve high impact on confidentiality, integrity, and availability without user interaction. Publicly available exploit code exists, and the vulnerability is listed on an "Active" hot list, indicating potential use. However, it impacts a product that was discontinued and end-of-life in 2011, with the vendor no longer providing support or patches.

Impacted Technologies

VendorProductVersion(s)CPE
1.00.1CPE matchmatch criteria
cpe:2.3:o:trendnet:tew-657brm_firmware:1.00.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

7.4HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.77%
Probability of exploitation in next 30 days
EPSS Percentile
51.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0077 is in the 45th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / panda666-888/vuls/blob/main/trendnet/tew-657brm/add_apcdb.md
ExploitThird Party Advisory
vuldb.com / submit/781563
Third Party AdvisoryVDB Entry
vuldb.com / vuln/354702
Third Party AdvisoryVDB Entry
vuldb.com / vuln/354702/cti
Permissions RequiredVDB Entry