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CVE-2024-7331

26
FAUCET Score

CVE-2024-7331 is a critical buffer overflow vulnerability (CWE-120) affecting TOTOLINK A3300R firmware version 17.0.0cu.557_B20221024. This flaw, found in the UploadCustomModule function, allows a remote attacker to achieve high impact on confidentiality, integrity, and availability by manipulating the 'File' argument. With a CVSS score of 8.8 (High), the vulnerability is easily exploitable over the network with low attack complexity and no user interaction required. While public exploit code has been disclosed, there is currently no evidence of active exploitation, Metasploit or Nuclei modules, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
17.0.0cu.557_b20221024CPE matchmatch criteria
cpe:2.3:o:totolink:a3300r_firmware:17.0.0cu.557_b20221024:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

8.7HIGH

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:X/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
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
1.20%
Probability of exploitation in next 30 days
EPSS Percentile
65.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0120 is in the 62nd percentile among its peer group of 17,844 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 / abcdefg-png/IoT-vulnerable/blob/main/TOTOLINK/A3300R/UploadCustomModule.md
ExploitTechnical DescriptionThird Party Advisory
vuldb.com
Permissions RequiredVDB Entry
vuldb.com
Permissions RequiredVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry