D-Link DIR-605 Router Information Disclosure Vulnerability
D-Link DIR-605 routers contain an information disclosure vulnerability that allows attackers to obtain a username and password by forging a post request to the /getcfg.php page.
- Vendor
- D-Link
- Product
- DIR-605 Router
- CVSS
- 7.5
- EPSS (exploit probability)
- 86.7%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2021-40655 being exploited?
Yes. CISA added CVE-2021-40655 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 86.7% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-10-24. Full cross-catalog view: /kev-comparison
CVE-2021-40655 timeline
Every event links to its source. Catalog dates are each catalog's own; day offsets count from NVD publication. Data: JSON
What to do
CISA required actionThis vulnerability affects legacy D-Link products. All associated hardware revisions have reached their end-of-life (EOL) or end-of-service (EOS) life cycle and should be retired and replaced per vendor instructions.
US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other D-Link CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2026-86296 D-Link DIR-822A Maximum Severity Zero-Day Vulnerabilitywrite-up | [ CRITICAL ] | 10.0 | 1.7% | — |
| CVE-2026-90703 D-Link DWR-M921 command injection via disk share creation endpointwrite-up | [ CRITICAL ] | 9.1 | 3.6% | — |
| CVE-2026-90702 D-Link DWR-M921 command injection via disk format endpointwrite-up | [ CRITICAL ] | 9.1 | 3.6% | — |
| CVE-2026-90699 D-Link DWR-M920 command injection via SIM PIN management endpointwrite-up | [ CRITICAL ] | 9.9 | 3.3% | — |
| CVE-2025-29635 D-Link DIR-823X Command Injection Vulnerability | [ HIGH ] | 7.2 | 87.9% | |
| CVE-2022-37055 D-Link Routers Buffer Overflow Vulnerability | [ CRITICAL ] | 9.8 | 55.5% | |
| CVE-2022-40799 D-Link DNR-322L Download of Code Without Integrity Check Vulnerability | [ HIGH ] | 8.8 | 33.7% | |
| CVE-2020-25079 D-Link DCS-2530L and DCS-2670L Command Injection Vulnerability | [ HIGH ] | 8.8 | 54.0% |