Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-109252— FreeRDP from 3.9.0 before 3.32.0 RDPEAR NULL Pointer Dereference via KERB_RPC_INTERNAL_NAME

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 3.9.0 至 3.32.0（不含 3.32.0）版本中存在一个空指针解引用漏洞，该漏洞位于 RDPEAR NDR 读取器中。攻击者可通过发送截断的 KERB_RPC_INTERNAL_NAME 数据使客户端崩溃。具体而言，攻击者可以构造一个 CreateApReqAuthenticatorReq 请求，其中 NameCount 设置为 2 或更大，但 Names 指针的数据在结束前被截断。这会导致清理过程中尝试解引用一个为空的基础指针，从而终止客户端。

CVSS 5.3 · Medium EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
FreeRDP FreeRDP 3.9.0< 3.32.0 affected
3.32.0 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-109252

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
FreeRDP from 3.9.0 before 3.32.0 RDPEAR NULL Pointer Dereference via KERB_RPC_INTERNAL_NAME
Source: CVE Program / CVE List V5
Vulnerability Description
FreeRDP from 3.9.0 before 3.32.0 contains a NULL pointer dereference vulnerability in the RDPEAR NDR reader that allows malicious servers to crash clients via truncated KERB_RPC_INTERNAL_NAME data. Attackers can send a CreateApReqAuthenticatorReq with NameCount of two or more ending before the Names pointer, causing cleanup to dereference a null base and terminate the client.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreeRDP FreeRDP 3.9.0 ~ 3.32.0 -

II. Public POCs for CVE-2026-109252

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-109252

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-109252 (2)

Same Patch Batch · FreeRDP · 2026-10-12 · 18 CVEs total

CVE-2026-109242 7.1 HIGH FreeRDP before 3.0.0 and 3.6.0 before 3.32.0 Uninitialized Heap Disclosure via Progressive
CVE-2026-109255 6.8 MEDIUM FreeRDP 3.0.0 before 3.32.0 heap buffer overflow via license_check_stream_length
CVE-2026-109245 6.8 MEDIUM FreeRDP 3.0.0 before 3.32.0 Improper Certificate Validation in freerdp_http_request
CVE-2026-109244 6.6 MEDIUM FreeRDP 2.0.0 before 3.32.0 Insecure Private Key Permissions in winpr-makecert
CVE-2026-109250 6.6 MEDIUM FreeRDP 3.0.0 before 3.32.0 Heap Buffer Overflow via PKCS#11 collect_keys()
CVE-2026-109248 6.5 MEDIUM FreeRDP 3.0.0 before 3.32.0 Heap Out-of-Bounds Read via WinPR Clipboard cFileName
CVE-2026-109246 6.5 MEDIUM FreeRDP before 3.32.0 Shadow Server Divide-by-Zero via Frame Acknowledge PDU
CVE-2026-109257 5.9 MEDIUM FreeRDP before 3.32.0 Double Free via NSCodec plane growth failure
CVE-2026-109254 5.9 MEDIUM FreeRDP 2.1.0 before 3.32.0 Use-After-Free via rdpsnd Disconnect Path
CVE-2026-109249 5.5 MEDIUM FreeRDP 3.0.0 before 3.32.0 Heap Out-of-Bounds Read via Remote Assistance File Parsing
CVE-2026-109253 5.3 MEDIUM FreeRDP 3.9.0 before 3.32.0 RDPEAR NDR Scalar Out-of-Bounds Read
CVE-2026-109251 5.3 MEDIUM FreeRDP before 3.32.0 Out-of-Bounds Write via MS-RDPEGT Video Geometry
CVE-2026-109256 5.3 MEDIUM FreeRDP 3.10.0 through 3.32.2 Heap Buffer Overflow in WinPR PNG Conversion
CVE-2026-109243 4.4 MEDIUM FreeRDP 3.0.0 before 3.32.0 Insecure Permissions on Soft-Smartcard Private Key File
CVE-2026-109240 3.1 LOW FreeRDP 3.11.0 before 3.32.1 Reachable Assertion DoS via urb_isoch_transfer
CVE-2026-109241 3.1 LOW FreeRDP before 3.32.0 NULL Dereference in Video Redirection Channel
CVE-2026-109247 3.1 LOW FreeRDP before 3.32.0 Path Traversal via Clipboard cFileName

IV. Related Vulnerabilities

Same product: FreeRDP
Same vendor: FreeRDP
Same weakness: CWE-476

V. Comments for CVE-2026-109252

No comments yet

Leave a comment