CVE-2022-42787
Wiesemann & Theis: Small number space for allocating session id in Com-Server family
- Published
- Updated
- Reserved
- Assigned by
- CERTVDE
Description
Multiple W&T products of the Comserver Series use a small number space for allocating sessions ids. After login of an user an unathenticated remote attacker can brute force the users session id and get access to his account on the the device. As the user needs to log in for the attack to be successful a user interaction is required.
Timeline
ID reserved
By CERTVDE
- 30 days later
· 30 days later
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CERTVDECNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.89% · top 40% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Weakness
Affected products
Wiesemann & Theis · Com-Server LC
- affected 1.0 – < 1.48
Wiesemann & Theis · Com-Server PoE 3 x Isolated
- affected 1.0 – < 1.48
Wiesemann & Theis · Com-Server 20mA
- affected 1.0 – < 1.48
Wiesemann & Theis · Com-Server ++
- affected 1.0 – < 1.48
Wiesemann & Theis · AT-Modem-Emulator
- affected 1.0 – < 1.48
Wiesemann & Theis · Com-Server UL
- affected 1.0 – < 1.48
Wiesemann & Theis · Com-Server Highspeed 100BaseFX
- affected 1.0 – < 1.76
Wiesemann & Theis · Com-Server Highspeed 100BaseLX
- affected 1.0 – < 1.76
Wiesemann & Theis · Com-Server Highspeed Office 1 Port
- affected 1.0 – < 1.76
Wiesemann & Theis · Com-Server Highspeed Office 4 Port
- affected 1.0 – < 1.76
Wiesemann & Theis · Com-Server Highspeed Industry
- affected 1.0 – < 1.76
Wiesemann & Theis · Com-Server Highspeed OEM
- affected 1.0 – < 1.76
Wiesemann & Theis · Com-Server Highspeed Compact
- affected 1.0 – < 1.76
Wiesemann & Theis · Com-Server Highspeed Isolated
- affected 1.0 – < 1.76
Wiesemann & Theis · Com-Server Highspeed 19" 1Port
- affected 1.0 – < 1.76
Wiesemann & Theis · Com-Server Highspeed 19" 4Port
- affected 1.0 – < 1.76
Wiesemann & Theis · Com-Server Highspeed PoE
- affected 1.0 – < 1.76
References (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-42787)Record last updated .