Security readout for executives and security teams
Plain-English summary
CVE-2026-0774 lets an unauthenticated attacker on the same or adjacent network run code through WatchYourLAN’s configuration page. The reported affected version is WatchYourLAN 2.1.2. The risk is high because successful exploitation can compromise confidentiality, integrity, and availability of the host running the service.
Executive priority
Treat as a high-priority internal network exposure issue. Prioritize environments where WatchYourLAN is reachable from user, guest, lab, or other untrusted network segments. Patch or isolate based on vendor guidance as soon as available.
Technical view
The flaw is an argument injection issue in handling the arpstrs parameter before a system call. ZDI reports remote code execution in the context of the service account, with CVSS 8.8 and vector AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. The mapped weakness is CWE-88.
Likely exposure
Exposure is mainly systems running WatchYourLAN 2.1.2 reachable by untrusted users on the same local or adjacent network. Internet-wide exposure is not stated in the sources, and the CVSS vector is network-adjacent rather than network.
Exploitation context
Authentication is not required, user interaction is not required, and attack complexity is low. The source bundle does not show CISA KEV listing or cite active exploitation. Do not assume exploitation in the wild without additional evidence.
Researcher notes
Public details identify the vulnerable parameter and weakness class but do not provide a vendor fix in the supplied sources. Avoid publishing exploit details. Focus validation on version presence, management-plane reachability, service privilege, and network segmentation.
Mitigation direction
- Check WatchYourLAN and ZDI guidance for an official fixed version or workaround.
- Restrict access to the WatchYourLAN configuration page to trusted management networks only.
- Block untrusted adjacent-network access to the WatchYourLAN service.
- Run the service with the least privileges supported by the vendor.
- Monitor for unexpected configuration-page requests or suspicious service child processes.
Validation and detection
- Inventory WatchYourLAN deployments and identify any running version 2.1.2.
- Confirm whether the configuration page is reachable from untrusted adjacent networks.
- Review access controls around management interfaces hosting WatchYourLAN.
- Check vendor advisories for patched versions or documented mitigations.
- Review logs for unusual requests involving the configuration page or arpstrs parameter.
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-88: 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-2026-0774 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
- High
- CVSS
- 8.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:A/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.
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:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ZDI-26-039CVE reference · x_research-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.
Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.