CVE-2021-36158

CVE-2021-36158 is a medium-severity vulnerability in Alpinelinux Aports with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-312.

Key facts

Description

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.

Frequently asked questions

What is CVE-2021-36158?
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.
How severe is CVE-2021-36158?
CVE-2021-36158 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-36158 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36158?
CVE-2021-36158 affects Alpinelinux Aports. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36158?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36158 published?
CVE-2021-36158 was published on 2021-07-05 and last updated on 2026-06-17.

References

Affected products (1)

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