CVE-2020-15415 kev in the critical feed json
On DrayTek Vigor3900, Vigor2960, and Vigor300B devices before 1.5.1, cgi-bin/mainfunction.cgi/cvmcfgupload allows remote command execution…
published 2020-06-30 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-7408
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2024-09-30
- epss
- 84.5%
- EPSS 84.5% chance of exploitation in 30 days, percentile 99.7%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
On DrayTek Vigor3900, Vigor2960, and Vigor300B devices before 1.5.1, cgi-bin/mainfunction.cgi/cvmcfgupload allows remote command execution via shell metacharacters in a filename when the text/x-python-script content type is used, a different issue than CVE-2020-14472.
Patch / fix
cisa required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- draytek vigor3900_firmware 1.5.1
- draytek vigor2960_firmware 1.5.1
- draytek vigor300b_firmware 1.5.1
Timeline
- Published
- Added to CISA KEV
- CISA SSVC: exploitation active
- CISA patch deadline
Known exploited
- Added
- 2 y ago
- Patch by
- 2024-10-21 (2 y ago)
- Ransomware
- Not known
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Vendor, product
- DrayTek, Multiple Vigor Routers
- CISA name
- DrayTek Multiple Vigor Routers OS Command Injection Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- yes
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
84.48% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template DrayTek Vigor - Command Injection nuclei detection template
- github.com https://github.com/CLP-team/Vigor-Commond-Injection referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- draytek vigor3900_firmware
- draytek vigor2960_firmware
- draytek vigor300b_firmware
Classification
- Weakness
-
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
References
-
github.com
/CLP-team/Vigor-Commond-Injection
exploit
-
draytek.com
/about/security-advisory
vendor-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-15415
government-resource, us-government-resource
Sources
- CVE List CVE-2020-15415
- NVD CVE-2020-15415
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.