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CVE-2023-6906

30
FAUCET Score

CVE-2023-6906 is a critical buffer overflow vulnerability affecting Totolink A7100RU routers running firmware version 7.4cu.2313_B20191024. This flaw resides in the HTTP POST Request Handler's main function, specifically when processing the 'flag' argument with 'ie8' input during a login attempt. With a CVSS score of 9.8, it allows for remote, unauthenticated attackers to achieve high impact on confidentiality, integrity, and availability. While no active exploitation is confirmed, public exploit details exist, and the vulnerability has garnered significant community discussion, though no official vendor response has been received.

Impacted Technologies

VendorProductVersion(s)CPE
7.4cu.2313_b20191024CPE matchmatch criteria
cpe:2.3:o:totolink:a7100ru_firmware:7.4cu.2313_b20191024:*:*:*:*:*:*:*

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
1.85%
Probability of exploitation in next 30 days
EPSS Percentile
76.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0185 is in the 65th 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 / unpWn4bL3/iot-security/blob/main/1.md
ExploitThird Party Advisory
vuldb.com
Permissions RequiredThird Party Advisory
vuldb.com
Third Party Advisory