PatchTheCVECVE-2018-10968: On D-Link DIR-550A and DIR-604M devices through v2.10KR, a malicious user can use a default TELNET account to
CVE-2018-10968 is a critical-severity flaw (CVSS 9.8) affecting dir-550a firmware, dir-604m firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
On D-Link DIR-550A and DIR-604M devices through v2.10KR, a malicious user can use a default TELNET account to get unauthorized access to vulnerable devices, aka a backdoor access vulnerability.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.7% (top 23%) |
| CISA exploited list | No |
| Weakness | CWE-1188 |
| Published | 2018-05-18 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2018-10968?
dir-550a firmware: upgrade to newer than 2.10kr; dir-604m firmware: upgrade to newer than 2.10kr. Exact commands for each OS are on this page.
Is CVE-2018-10968 being exploited?
CVE-2018-10968 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2018-10968 affect?
CVE-2018-10968 affects dir-550a firmware, dir-604m firmware. Severity is critical (CVSS 9.8). On D-Link DIR-550A and DIR-604M devices through v2.10KR, a malicious user can use a default TELNET account to get unauthorized access to vulnerable devices, aka a backdoor access vulnerability.
How urgent is CVE-2018-10968?
Priority 59/100. Critical severity; Remotely exploitable, no login, no user action
Software pages
Related CVEs
- CVE-2018-10967 HIGH 8.8 UPGRADE UPGRADE On D-Link DIR-550A and DIR-604M devices through v2.10KR, a malicious user can forge an HTTP request to inject