Security readout for executives and security teams
Plain-English summary
CVE-2025-60671 affects a D-Link DIR-823G firmware image and can let someone with write access to a specific internal file run commands on the router. The cited sources do not show active exploitation or a confirmed vendor fix. Treat affected routers as a priority for inventory, vendor guidance, and access review.
Executive priority
Prioritize validation for any DIR-823G routers in production, especially internet-adjacent or remotely managed devices. Business urgency is moderate because exploitation needs prior write access, but router command execution can support persistence, traffic interception, or lateral movement.
Technical view
The timelycheck and sysconf binaries process /var/system/linux_vlan_reinit, partially validate only a prefix, format content with vsnprintf(), then pass it to system(). This is CWE-77 command injection. CVSS 3.1 is 5.4, with network attack vector, low complexity, low privileges, no user interaction, and low confidentiality/integrity impact.
Likely exposure
Likely exposure is limited to D-Link DIR-823G devices running firmware DIR823G_V1.0.2B05_20181207.bin. The CVE record’s structured affected-product fields are incomplete, so teams should confirm model and firmware directly from device inventory and vendor materials.
Exploitation context
The source bundle says KEV is false and provides no cited evidence of active exploitation. Exploitation requires the attacker to already have write access to /var/system/linux_vlan_reinit, which limits reach but is still important on compromised or poorly managed routers.
Researcher notes
Evidence identifies command injection in file-processing paths within timelycheck and sysconf. The affected metadata is sparse, and the bundle does not name a patch. Avoid assuming other D-Link models are affected without vendor or CVE evidence.
Mitigation direction
- Check D-Link security bulletin for model-specific firmware updates or advisories.
- Inventory DIR-823G routers and record exact firmware versions.
- Restrict router administrative access to trusted management networks only.
- Review local controls that could write to /var/system/linux_vlan_reinit.
- Replace unsupported devices if no vendor update is available.
Validation and detection
- Identify all D-Link DIR-823G devices in network inventory.
- Confirm whether firmware matches DIR823G_V1.0.2B05_20181207.bin.
- Review vendor bulletin for CVE-2025-60671 status and guidance.
- Check router access logs for unexpected administrative activity.
- Verify management interfaces are not internet-exposed.
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 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-2025-60671 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
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
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
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N2.82.5CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
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
- https://www.dlink.com/en/security-bulletin/CVE reference, mitre
- https://www.dlink.com/enCVE reference, mitre
- https://github.com/yifan20020708/SGTaint-0-day/blob/main/DLink/DLink-DIR-823G/CVE-2025-60671.mdCVE reference, mitre
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.