CVE-2026-57157: freerdp Out-of-bounds Read

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0, FreeRDP server implementations with the MS-RDPECAM camera device enumerator channel enabled scan attacker-supplied DeviceName and VirtualChannelName fields for a NUL terminator in channels/rdpecam/server/camera_device_enumerator_main.c and then dereference once past the scan bound, allowing a malicious RDP client to trigger a 1- to 2-byte out-of-bounds heap read. This issue is fixed in version 3.28.0.

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CVSS v3.1 Score

6.5

MEDIUM

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

EPSS — Exploit Prediction

0.0054

Probability of exploitation

0.42%

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-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
freerdp	freerdp	< 3.28.0

References

Advisories & Patches

https://github.com/FreeRDP/FreeRDP/commit/02991e7b3cc0b9800b09030c0e9c80bab877d668 https://github.com/FreeRDP/FreeRDP/commit/bd789a31cb794750dbe5e7c0e205981074cb681a https://github.com/FreeRDP/FreeRDP/pull/12930 https://github.com/FreeRDP/FreeRDP/pull/12945 https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-47fr-jw86-c3fj

Exploits

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-47fr-jw86-c3fj

Other References

https://github.com/FreeRDP/FreeRDP/releases/tag/3.28.0

Frequently Asked Questions

What is CVE-2026-57157? +

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0, FreeRDP server implementations with the MS-RDPECAM camera device enumerator channel enabled scan attacker-supplied DeviceName and VirtualChannelName fields for a NUL terminator in channels/rdpecam/server/camera_device_enumerator_main.c and then dereference once past the scan bound, allowing a malicious RDP client to trigger a 1- to 2-byte out-of-bounds heap read. This issue is fixed in version 3.28.0. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-57157? +

CVE-2026-57157 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0054, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-57157? +

CVE-2026-57157 affects products from freerdp, specifically: freerdp. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-57157? +

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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