user_login.cgi on Draytek Vigor2620 devices before 3.9.8.4 (and on all versions of…
Priority MEDIUM 51CWE-94Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-94.
Summary
user_login.cgi on Draytek Vigor2620 devices before 3.9.8.4 (and on all versions of Vigor2925 devices) allows attackers to send a crafted payload to modify the content of the code segment, insert shellcode, and execute arbitrary code.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0094 61st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:draytek:vigor2620_firmware:*:*:*:*:*:*:*:* | before 3.9.8.4 | Vulnerable | DrayTek |
| cpe:2.3:h:draytek:vigor2620:-:*:*:*:*:*:*:* | not specified by NVD | Running on | DrayTek |
| cpe:2.3:o:draytek:vigor2625_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | DrayTek |
| cpe:2.3:h:draytek:vigor2625:-:*:*:*:*:*:*:* | not specified by NVD | Running on | DrayTek |
- cpe:2.3:o:draytek:vigor2620_firmware:*:*:*:*:*:*:*:* Versions before 3.9.8.4 Vulnerable ·DrayTek
- cpe:2.3:h:draytek:vigor2620:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·DrayTek
- cpe:2.3:o:draytek:vigor2625_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·DrayTek
- cpe:2.3:h:draytek:vigor2625:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·DrayTek
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-31447
- 2026-10-03 Alias added: GHSA-wpv3-j7wc-292j
References
More DrayTek Vigor2620 Firmware vulnerabilities
- TI-2024-27685 Buffer Overflow vulnerabilities exist in DrayTek Vigor310 devices through 4.3.2.6 (in the… CVSS 3.1HIGH 8.0
- TI-2024-27681 DrayTek Vigor3910 devices through 4.3.2.6 have a stack-based overflow when processing… CVSS 3.1HIGH 8.0
- TI-2024-34257 Buffer Overflow vulnerability in Vigor2620/LTE200 3.9.8.9 and earlier and Vigor2860/2925… CVSS 3.1CRITICAL 9.8
- TI-2024-34256 Vigor165/166 4.2.7 and earlier; Vigor2620/LTE200 3.9.8.9 and earlier; Vigor2860/2925… CVSS 3.1CRITICAL 9.8
- TI-2024-27682 DrayTek Vigor310 devices through 4.3.2.6 allow a remote attacker to execute arbitrary… CVSS 3.1CRITICAL 9.8
- TI-2024-27589 An issue in the CGI endpoint used to upload configurations in Draytek devices Vigor… CVSS 3.1HIGH 8.8
Sources
- CVE-2023-31447 · CVE Program
- CVE-2023-31447 · NVD
- FIRST EPSS
- GHSA-wpv3-j7wc-292j · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences