Security readout for executives and security teams
Plain-English summary
A flaw in certain D-Link DWR-M961 routers could let a remote, unauthenticated attacker take complete control of the device. Successful exploitation provides root-level command execution, enabling data theft, configuration changes, traffic disruption, or device compromise. The issue is limited to hardware revision C1 running firmware older than the identified fixed release.
Executive priority
Treat this as an urgent remediation item for confirmed DWR-M961 C1 deployments. The combination of unauthenticated network access, low attack complexity, and root execution creates potential for full router compromise. Identify affected devices immediately, reduce interface exposure, and complete firmware upgrades promptly. Escalate devices that cannot be updated for isolation or replacement.
Technical view
CVE-2026-71949 is a CWE-78 command injection vulnerability in the DWR-M961 /boafrm/formUSSDSetup interface. The ussdValue and selectMenuValue fields improperly accept command input. The CVSS 3.1 vector indicates network access, low complexity, no required privileges or user interaction, and high confidentiality, integrity, and availability impact. Commands execute with root privileges.
Likely exposure
Exposure applies to D-Link DWR-M961 hardware revision C1 running firmware earlier than 1.1.5_C1_202607071108. Risk is greatest where the affected interface is reachable from untrusted networks. The supplied evidence does not identify deployment counts, default exposure, or other affected hardware revisions.
Exploitation context
The vulnerability is remotely reachable according to its CVSS vector and requires neither authentication nor user interaction. Successful exploitation yields root-level command execution. The source bundle contains no evidence of active exploitation, and the CVE is not identified as being in CISA KEV. Absence from KEV does not prove exploitation is not occurring.
Researcher notes
The vulnerable sink is associated with /boafrm/formUSSDSetup and two input fields: ussdValue and selectMenuValue. The assigned weakness is CWE-78. The supplied material does not establish authentication behavior beyond the CVSS no-privileges rating, provide technical root-cause details, document observed attacks, or describe indicators of compromise. Avoid interpreting KEV absence as evidence of safety.
Mitigation direction
- Upgrade affected C1 devices to firmware 1.1.5_C1_202607071108 or a later vendor-supported release.
- Restrict the router management interface from untrusted networks and unnecessary remote access.
- If upgrading is delayed, isolate affected devices and consult D-Link's advisory for supported mitigations.
- Prioritize replacement if an affected device cannot receive or reliably retain the corrected firmware.
Validation and detection
- Inventory DWR-M961 devices and confirm each device's hardware revision.
- Record installed firmware and identify versions earlier than 1.1.5_C1_202607071108.
- Confirm the affected management interface is not reachable from untrusted networks.
- Review device and perimeter logs for suspicious requests to the affected interface or unexplained administrative changes.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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 lookupCVE-2026-71949 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
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
SSVC decision data
CVSS vector scores
2 official scoresWe 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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——VulnCheckVulnerability 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
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- D-Link AdvisoryCVE reference, VulnCheck · vendor-advisory, patch
- Product WebpageCVE reference, VulnCheck · product
- https://www.vulncheck.com/advisories/d-link-dwr-m961-command-injection-via-boafrm-formussdsetupCVE reference, VulnCheck · 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.