ALPINE-CVE-2026-33977
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-33977
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-33977.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-33977
- Upstream
- Published
- 2026-03-30T22:16:19Z
- Modified
- 2026-11-03T06:32:54Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, a malicious RDP server can crash the FreeRDP client by sending audio data in IMA ADPCM format with an invalid initial step index value (>= 89). The unvalidated step index is read directly from the network and used to index into a 89-entry lookup table, triggering a WINPR_ASSERT() failure and process abort via SIGABRT. This affects any FreeRDP client that has audio redirection (RDPSND) enabled, which is the default configuration. This issue has been patched in version 3.24.2.
- References
Affected packages
Alpine:v3.23 / freerdp
Package
- Name
- freerdp
- Purl
- pkg:apk/alpine/freerdp?arch=source