Security readout for executives and security teams
Plain-English summary
This issue lets an unauthenticated Internet attacker change DNS settings on certain end-of-life D-Link routers and NAS devices. That can silently redirect users to attacker-controlled sites or services. The affected products no longer receive security updates, so replacement or removal is the practical business response.
Executive priority
Treat as urgent for any still-deployed affected device. The impact is traffic redirection and credential exposure risk, and the products are end-of-life. Prioritize replacement over extended mitigation work.
Technical view
CVE-2026-0625 is an authentication bypass/improper access control flaw in D-Link dnscfg.cgi. Direct access to the DNS configuration endpoint can allow unauthenticated DNS setting changes. It is rated CVSS 4.0 9.3 critical and mapped to CWE-306. The source bundle reports Shadowserver observed exploitation evidence on 2025-11-27 UTC.
Likely exposure
Highest risk is for listed D-Link DSL, DIR, and DNS devices reachable from untrusted networks. Consumer, small-office, and carrier-deployed routers are especially relevant. Exposure depends on whether affected models remain deployed and whether their management interfaces or vulnerable CGI endpoints are reachable.
Exploitation context
The bundle states similar behavior was leveraged by the GhostDNS malware ecosystem in 2019 for DNSChanger attacks. It also states exploitation evidence was observed by Shadowserver in 2025. CISA KEV is not listed in the provided data.
Researcher notes
Affected version data in the bundle is not granular; entries show version “0” and default status unknown. Validate model and firmware details against D-Link and VulnCheck references. Avoid assuming a patch exists; sources emphasize end-of-life/end-of-service status.
Mitigation direction
- Identify and retire affected end-of-life D-Link devices where feasible.
- Check D-Link advisories for model-specific guidance before making changes.
- Remove management interfaces from Internet exposure where still deployed.
- Reset and verify DNS settings on any suspected affected device.
- Replace unsupported devices with currently supported hardware.
Validation and detection
- Inventory the listed D-Link DSL, DIR, and DNS models across networks.
- Confirm whether any affected device is reachable from untrusted networks.
- Review device DNS settings for unauthorized or unexpected resolvers.
- Check logs, alerts, and ISP notifications for DNSChanger indicators.
- Document replacement status for all end-of-life affected devices.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-306: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-0625 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.3 (4.0)
- Known Exploited
- No
- Published
Vector: 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/E:A
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
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/E:A——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: 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/E:A
Source materials
- CVE List V5 sourceCVE List V5
- https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10488CVE reference · vendor-advisory, mitigation
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10068CVE reference · vendor-advisory
- https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10118CVE reference · vendor-advisory
- https://www.vulncheck.com/advisories/dlink-dsl-command-injection-via-dns-configuration-endpointCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Missing Authentication for Critical Function
Missing Authentication for Critical Function represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.