CVE-2026-109243: Permission Flaw (CVSS 4.4)

Description

FreeRDP from 3.0.0 before 3.32.0 contains an incorrect permission assignment vulnerability that allows local users to read private keys written by crypto_write_pem without owner-only permissions. Attackers on multi-user Unix hosts can enumerate the shared temporary directory during soft-smartcard logon to read the world-readable PKINIT private-key copy.

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CVSS v3.1 Score

4.4

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0009

Probability of exploitation

0.00%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-732 CWE-732

References

Other References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q9p9-j22r-577p https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-insecure-permissions-on-soft-smartcard-private-key-file https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q9p9-j22r-577p

Frequently Asked Questions

What is CVE-2026-109243? +

FreeRDP from 3.0.0 before 3.32.0 contains an incorrect permission assignment vulnerability that allows local users to read private keys written by crypto_write_pem without owner-only permissions. Attackers on multi-user Unix hosts can enumerate the shared temporary directory during soft-smartcard logon to read the world-readable PKINIT private-key copy. It has a CVSS v3.1 base score of 4.4 (MEDIUM).

How severe is CVE-2026-109243? +

CVE-2026-109243 has a CVSS v3.1 score of 4.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0009, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-109243? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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