CVE-2021-36158 json
In the xrdp package (in branches through 3.14) for Alpine Linux, RDP sessions are vulnerable to man-in-the-middle attacks because pre-gener…
published 2021-07-05 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-22782
- cvss
- 5.9
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 28%
- public exploits
- 0
- none known
Summary
In the xrdp package (in branches through 3.14) for Alpine Linux, RDP sessions are vulnerable to man-in-the-middle attacks because pre-generated RSA certificates and private keys are used.
Patch / fix
- xrdp Alpine 3.11 0.9.11-r1
- xrdp Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 0.9.15-r1
alpine advisories ALPINE-CVE-2021-36158
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-312 Cleartext Storage of Sensitive Information
References
-
gitlab.alpinelinux.org
/alpine/aports/-/issues/12811
patch, vendor-advisory
Sources
- CVE List CVE-2021-36158
- NVD CVE-2021-36158
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.