CVE-2026-91962— FreeRDP before 3.31.0 Integer Overflow via audin Apple backends
Quick assessment
Affected
FreeRDP FreeRDP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
FreeRDP 在 3.31.0 版本之前，在处理来自 消息的 值时，其 audin（音频输入）Apple 后端存在整数溢出漏洞。攻击者可以提供精心构造的 值，导致 的大小计算发生回绕，从而造成缓冲区分配过小，并可能引发越界访问问题。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-91962
Vulnerability Information
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Vulnerability Title
FreeRDP before 3.31.0 Integer Overflow via audin Apple backends
Source: CVE Program / CVE List V5
Vulnerability Description
FreeRDP before 3.31.0 contains an integer overflow in the audin Apple backends when processing FramesPerPacket values from MSG_SNDIN_OPEN messages. Attackers can supply crafted FramesPerPacket values that cause AudioQueueAllocateBuffer size computation to wrap, resulting in undersized buffer allocation and potential out-of-bounds access.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区大小计算不正确
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-91962
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-91962 (2)
Same Patch Batch · FreeRDP · 2026-09-15 · 20 CVEs total
| CVE-2026-91949 | 9.3 CRITICAL | FreeRDP 3.0.0 through 3.30.0 Protocol Negotiation Bypass |
| CVE-2026-91964 | 8.8 HIGH | FreeRDP 2.0.0 through 3.30.0 Heap Buffer Overflow via RoutingToken |
| CVE-2026-91955 | 7.5 HIGH | FreeRDP before 3.31.0 Denial of Service via Desktop Dimensions |
| CVE-2026-91947 | 7.5 HIGH | FreeRDP Server before 3.31.0 Use-After-Free via DRDYNVC |
| CVE-2026-91948 | 7.5 HIGH | FreeRDP before 3.31.0 Out-of-bounds Write via SHOW_PROTOCOL |
| CVE-2026-91958 | 6.6 MEDIUM | FreeRDP 3.11.0 through 3.30.0 Heap Buffer Overflow via Monitor Index |
| CVE-2026-91954 | 6.5 MEDIUM | FreeRDP before 3.31.0 NULL Pointer Dereference via NSCodec |
| CVE-2026-91956 | 6.5 MEDIUM | FreeRDP before 3.31.0 Out-of-Bounds Read via URBDRC |
| CVE-2026-91951 | 6.5 MEDIUM | FreeRDP 3.14.0 through 3.30.0 Out-of-bounds Write via urbdrc |
| CVE-2026-91946 | 6.5 MEDIUM | FreeRDP before 3.31.0 Information Disclosure via RDPGFX ResetGraphics |
| CVE-2026-91953 | 6.5 MEDIUM | FreeRDP before 3.31.0 Heap Buffer Overflow via LB_LOAD_BALANCE_INFO |
| CVE-2026-91961 | 6.5 MEDIUM | FreeRDP before 3.31.0 Denial of Service via URBDRC |
| CVE-2026-91963 | 6.5 MEDIUM | FreeRDP 2.0.0 through 3.30.0 Uninitialized Heap Memory Disclosure via urbdrc |
| CVE-2026-91950 | 6.5 MEDIUM | FreeRDP before 3.31.0 Out-of-Bounds Read via UINT32 Wraparound |
| CVE-2026-91952 | 6.5 MEDIUM | FreeRDP before 3.31.0 Denial of Service via pool_decode_rect |
| CVE-2026-91945 | 6.5 MEDIUM | FreeRDP before 3.31.0 Out-of-bounds Read via Smartcard ATR |
| CVE-2026-91960 | 6.5 MEDIUM | FreeRDP before 3.31.0 Integer Overflow Double Free |
| CVE-2026-91959 | 6.5 MEDIUM | FreeRDP before 3.31.0 Buffer Over-read via RTS Gateway |
| CVE-2026-91957 | 3.1 LOW | FreeRDP before 3.31.0 Use-After-Free via smartcard worker |
IV. Related Vulnerabilities
Same product: FreeRDP
-
CVE-2026-91963
FreeRDP 2.0.0 through 3.30.0 Uninitialized Heap Memory Discl -
CVE-2026-91964
FreeRDP 2.0.0 through 3.30.0 Heap Buffer Overflow via Routin -
CVE-2026-91961
FreeRDP before 3.31.0 Denial of Service via URBDRC -
CVE-2026-91960
FreeRDP before 3.31.0 Integer Overflow Double Free -
CVE-2026-91959
FreeRDP before 3.31.0 Buffer Over-read via RTS Gateway
Same vendor: FreeRDP
-
CVE-2026-91964
FreeRDP 2.0.0 through 3.30.0 Heap Buffer Overflow via Routin -
CVE-2026-91963
FreeRDP 2.0.0 through 3.30.0 Uninitialized Heap Memory Discl -
CVE-2026-91961
FreeRDP before 3.31.0 Denial of Service via URBDRC -
CVE-2026-91960
FreeRDP before 3.31.0 Integer Overflow Double Free -
CVE-2026-91959
FreeRDP before 3.31.0 Buffer Over-read via RTS Gateway
Same weakness: CWE-131
-
CVE-2026-47773
ArduinoBLE: Memory corruption via malformed ATT write reques -
CVE-2026-69598
Windows iSCSI Remote Code Execution Vulnerability -
CVE-2026-78221
OpenVPN 缓冲区错误漏洞 -
CVE-2026-18743
Popt-devel: popt-static: short realloc in poptconfigfiletost -
CVE-2026-78002
Rsyslog: rsyslog: denial of service via heap buffer overflow
V. Comments for CVE-2026-91962
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