Security readout for executives and security teams
Plain-English summary
CVE-2026-1544 is an OS command injection issue in D-Link DIR-823X firmware 250416. A remote attacker with required access could manipulate the lan_gateway parameter in /goform/set_mode to run system commands. Public exploit material is reported, and the affected product is no longer supported, increasing replacement urgency.
Executive priority
Treat as a near-term device risk, not an enterprise-wide software emergency. Prioritize locating affected routers, removing remote exposure, and replacing unsupported units. Public exploit availability raises urgency, but current sources do not confirm active exploitation.
Technical view
The flaw affects function sub_41E2A0 in /goform/set_mode on D-Link DIR-823X 250416. Sources classify it as CWE-77/CWE-78 OS command injection via lan_gateway. CVSS v2 is 6.5 with network access, low complexity, and single authentication required. No vendor patch is identified in the provided sources.
Likely exposure
Exposure is limited to D-Link DIR-823X devices running firmware 250416, especially where the management interface is reachable by untrusted networks or users. The CVSS vector indicates authentication is required. Unsupported status means normal vendor remediation may not be available.
Exploitation context
The source bundle states a public exploit has been released and may be used for attacks. There is no KEV listing and no cited evidence of confirmed active exploitation. The practical risk depends on whether affected devices are deployed and remotely accessible.
Researcher notes
Evidence is primarily from VulDB/CVE metadata and a public GitHub issue reference. The affected version is narrowly stated as DIR-823X 250416. Avoid assuming other D-Link models or firmware are affected without vendor or CVE evidence. Authentication requirement is based on CVSS Au:S.
Mitigation direction
- Identify and prioritize any D-Link DIR-823X devices running firmware 250416.
- Restrict management access to trusted administrative networks only.
- Remove internet exposure for affected router administration interfaces.
- Check D-Link guidance, but plan replacement because sources say the product is unsupported.
- Monitor for suspicious requests involving /goform/set_mode or lan_gateway.
Validation and detection
- Inventory network devices for D-Link DIR-823X model and firmware 250416.
- Confirm whether administrative interfaces are reachable from untrusted networks.
- Review access controls for router management services.
- Check logs for unusual administrative activity around /goform/set_mode.
- Track CVE and vendor pages for any updated guidance.
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-77: 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 lookupCWE-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-2026-1544 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
- Medium
- CVSS
- 6.5 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
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.
AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR86.4Primary CVE scoreVulnerability scoring details
Base CVSS 2.0 score
6.5MediumVector: AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
Source materials
- CVE List V5 sourceCVE List V5
- VDB-343228 | D-Link DIR-823X set_mode sub_41E2A0 os command injectionCVE reference · vdb-entry, technical-description
- VDB-343228 | CTI Indicators (IOB, IOC, TTP, IOA)CVE reference · signature, permissions-required
- Submit #739155 | D-Link DIR-823X 250416 OS Command InjectionCVE reference · third-party-advisory
- https://github.com/master-abc/cve/issues/16CVE reference · exploit, issue-tracking
- https://www.dlink.com/CVE reference · product
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.
Improper Neutralization of Special Elements used in a Command ('Command Injection')
Improper Neutralization of Special Elements used in a Command ('Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.