Arbitrary file overwrite through certificate update functionality
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
A POST request sent to a specific webserver endpoint can be used to write to arbitrary file locations. The endpoint accepts the filename parameter in the Content-Disposition header without verification. This can be used to cause a denial of service by overwriting system files, or remote-code-execution by overwriting shell-scripts which execution can be triggered through other means.
Why it matters now
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
Remediation
- Fix · CNA DC-80 (EVbee) Fixed in 1.5.1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
EVbee DC-80 1.5.1
7 records Highest priority Priority MEDIUM 7 MEDIUM
Other records, highest priority first
- TI-2026-17769 Command injection in NPC start web endpointPriority MEDIUM 51
- TI-2026-17761 Command injection in diagnosis web endpointPriority MEDIUM 51
- TI-2026-17762 Missing authentication for webserver endpointsPriority MEDIUM 49
Timeline
- 2026-10-02 Threatist record created from CVE-2026-22102
- 2026-10-03 Alias added: GHSA-7jrx-8jxh-496c
References
Advisory 1
More EVbee vulnerabilities
- TI-2026-17769 Command injection in NPC start web endpoint CVSS 4.0CRITICAL 9.3
- TI-2026-17761 Command injection in diagnosis web endpoint CVSS 4.0CRITICAL 9.3
- TI-2026-17762 Missing authentication for webserver endpoints CVSS 4.0CRITICAL 9.3
- TI-2026-17763 Missing firmware validation allows remote code execution CVSS 4.0CRITICAL 9.3
- TI-2026-17760 Weak root password in EVbee DC 80 CVSS 4.0CRITICAL 9.3
- TI-2026-17764 Sensitive information is written to logs CVSS 4.0CRITICAL 9.2
Sources
- CVE-2026-22102 · CVE Program
- CVE-2026-22102 · NVD
- FIRST EPSS
- GHSA-7jrx-8jxh-496c · 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