D-Link DSL6740C v6.TR069.20211230 was discovered to use insecure default credentials for Administrator access, possibly allowing attackers…

published 2024-10-30 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-42976

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits: 0; none known

D-Link DSL6740C v6.TR069.20211230 was discovered to use insecure default credentials for Administrator access, possibly allowing attackers to bypass authentication and escalate privileges on the device via a bruteforce attack.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-10-31)

Exploit prediction

0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

gist.github.com https://gist.github.com/stevenyu113228/e264c145d6e6e6b59cf53fddc27409ad#1--predictable-administrator-credentials-in-d-link-dsl6740c-modem referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	8.8	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	8.8	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

dlink dsl6740c_firmware

Classification

Weakness

CWE-521 Weak Password Requirements

References

gist.github.com /stevenyu113228/e264c145d6e6e6b59cf53fddc27409ad#1--predictable-administrator-credentials-in-d-link-dsl6740c-m
exploit, third-party-advisory
dlink.com /en/security-bulletin/
product

Sources

CVE List CVE-2024-48271
NVD CVE-2024-48271

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary