Security readout for executives and security teams
Plain-English summary
CVE-2024-41339 affects multiple DrayTek Vigor routers. A flaw in the configuration upload CGI endpoint can let an authenticated network attacker upload a crafted kernel module and run arbitrary code. For executives, this is a serious router compromise risk because affected devices sit at network boundaries.
Executive priority
Treat this as high priority for affected DrayTek routers, especially internet-edge or shared-administration environments. Compromise could give an attacker control over routing infrastructure, traffic visibility, and availability.
Technical view
The CVE describes CWE-434 unrestricted upload behavior in DrayTek configuration upload handling. CVSS 3.1 is 8.8: network reachable, low attack complexity, low privileges, no user interaction, with high confidentiality, integrity, and availability impact. Affected firmware branches are listed by model family.
Likely exposure
Exposure is limited to listed DrayTek Vigor models running firmware earlier than the fixed versions named in the CVE. Risk is higher where the relevant management or configuration upload path is reachable by low-privileged authenticated users over the network.
Exploitation context
The supplied sources do not state active exploitation, and the CVE is not marked KEV in the bundle. The issue still has serious impact because successful exploitation allows arbitrary code execution through crafted kernel module upload.
Researcher notes
The bundle names affected model families and fixed version thresholds but does not include exploit details, vendor workaround text, or observed exploitation evidence. Analysis should avoid assuming unauthenticated exploitation because CVSS lists PR:L.
Mitigation direction
- Inventory DrayTek Vigor models and firmware versions against the CVE affected list.
- Upgrade affected devices to the fixed firmware versions named for each model family.
- Check DrayTek and Faraday guidance for any model-specific remediation notes.
- Prioritize boundary routers and devices with reachable management interfaces.
- Retire or isolate devices where fixed firmware is unavailable.
Validation and detection
- Confirm each router model and firmware version from administrative inventory or device records.
- Verify upgraded devices meet or exceed the CVE fixed version for that model.
- Review router logs for unexpected configuration upload activity where logs are available.
- Check whether any affected management paths are reachable by untrusted users.
- Track exceptions for devices awaiting vendor-confirmed remediation.
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-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection 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-2024-41339 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 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/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
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:H/I:H/A:H2.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/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
- https://medium.com/faraday/advisory-multiple-vulnerabilities-affecting-draytek-routers-78a6cb8b3946CVE 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.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.