CVE-2026-0625
High PUBLISHEDD-Link DSL/DIR/DNS Authentication Bypass via DNS Configuration Endpoint
Not yet in CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
Multiple D-Link DSL/DIR/DNS devices contain an authentication bypass and improper access control vulnerability in the dnscfg.cgi endpoint that allows an unauthenticated attacker to access DNS configuration functionality. By directly requesting this endpoint, an attacker can modify the device’s DNS settings without valid credentials, enabling DNS hijacking (“DNSChanger”) attacks that redirect user traffic to attacker-controlled infrastructure. In 2019, D-Link reported that this behavior was leveraged by the "GhostDNS" malware ecosystem targeting consumer and carrier routers. All impacted products were subsequently designated end-of-life/end-of-service, and no longer receive security updates. Exploitation evidence was observed by the Shadowserver Foundation on 2025-11-27 (UTC).
- CVE Published
- Jan 05, 2026
- Exploitation Reported
- Jun 01, 2026
- CVSS
- 9.3 Critical
- EPSS
- 1.0%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| D-Link |
DSL-2640B
|
0 |
Affected |
| D-Link |
DSL-2740R
|
0 |
Affected |
| D-Link |
DSL-2780B
|
0 |
Affected |
| D-Link |
DSL-526B
|
0 |
Affected |
| D-Link |
DSL-2640T
|
0 |
Affected |
| D-Link |
DSL-500
|
0 |
Affected |
| D-Link |
DSL-500G
|
0 |
Affected |
| D-Link |
DSL-502G
|
0 |
Affected |
| D-Link |
DIR-905L
|
0 |
Affected |
| D-Link |
DIR-600
|
0 |
Affected |
| D-Link |
DIR-608
|
0 |
Affected |
| D-Link |
DIR-610
|
0 |
Affected |
| D-Link |
DIR-611
|
0 |
Affected |
| D-Link |
DIR-615
|
0 |
Affected |
| D-Link |
DNS-320
|
0 |
Affected |
| D-Link |
DNS-325
|
0 |
Affected |
| D-Link |
DNS-345
|
0 |
Affected |
CVE References
- Vendor Advisory — supportannouncement.us.dlink.com supportannouncement.us.dlink.com · Vendor Advisory https://supportannouncement.us.dlink.com/security/publication.aspx?na...
- Vendor Advisory — supportannouncement.us.dlink.com supportannouncement.us.dlink.com · Vendor Advisory https://supportannouncement.us.dlink.com/announcement/publication.asp...
- Vendor Advisory — supportannouncement.us.dlink.com supportannouncement.us.dlink.com · Vendor Advisory https://supportannouncement.us.dlink.com/security/publication.aspx?na...
- Third-Party Advisory — vulncheck.com vulncheck.com · Third-Party Advisory https://www.vulncheck.com/advisories/dlink-dsl-command-injection-via-...
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CVE First | 2026-06-01 10:47 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Exploitation Status
Exploited in the wild
Recorded 2026-06-01 10:47:42 UTC · CVE
Weaknesses (CWE)
-
Missing Authentication for Critical Function
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
10:47 UTC about 2 months ago10:47 UTC · about 2 months ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
21:14 UTC 6 months ago21:14 UTC · 6 months ago
CVE published
Vulnerability disclosed publicly
-
20:59 UTC 6 months ago20:59 UTC · 6 months ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2026-0625
{
"cve_id": "CVE-2026-0625",
"title": "D-Link DSL/DIR/DNS Authentication Bypass via DNS Configuration Endpoint",
"affected_vendor": "D-Link",
"affected_product": "DSL-2640B, DSL-2740R, DSL-2780B, DSL-526B, DSL-2640T, DSL-500, DSL-500G, DSL-502G, DIR-905L, DIR-600, DIR-608, DIR-610, DIR-611, DIR-615, DNS-320, DNS-325, DNS-345",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 9.3,
"epss_score": 0.00964,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}