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CVE-2024-7909

28
FAUCET Score

CVE-2024-7909 is a critical stack-based buffer overflow vulnerability affecting TOTOLINK EX1200L firmware version 9.3.5u.6146_B20201023. This flaw, located in the setLanguageCfg function of /www/cgi-bin/cstecgi.cgi, can be triggered remotely by manipulating the 'langType' argument. With a CVSS score of 9.8, it poses a severe risk, allowing for complete compromise of confidentiality, integrity, and availability. While the exploit has been publicly disclosed, there is currently no evidence of active exploitation, and it has garnered minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
9.3.5u.6146_b20201023CPE matchmatch criteria
cpe:2.3:o:totolink:ex1200l_firmware:9.3.5u.6146_b20201023:*:*:*:*:*:*:*

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
1.47%
Probability of exploitation in next 30 days
EPSS Percentile
71.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0147 is in the 58th percentile among its peer group of 36,897 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 / BeaCox/IoT_vuln/tree/main/totolink/EX1200L/setLanguageCfg_bof
ExploitThird Party Advisory
vuldb.com
Permissions RequiredVDB Entry
vuldb.com
Permissions RequiredThird Party AdvisoryVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
totolink.net