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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-33985— FreeRDP: ClearCodec Glyph Cache Count Desync - Heap OOB Read

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是FreeRDP团队的一款开源的远程桌面协议（RDP）的实现。 FreeRDP 3.24.2之前版本存在安全漏洞，该漏洞源于将相邻堆内存中的像素数据渲染到屏幕，可能向攻击者泄露敏感数据。

CVSS 5.9 · Medium EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-33985

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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: ClearCodec Glyph Cache Count Desync - Heap OOB Read
Source: CVE Program / CVE List V5
Vulnerability Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, pixel data from adjacent heap memory is rendered to screen, potentially leaking sensitive data to the attacker. This issue has been patched in version 3.24.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
FreeRDP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeRDP是FreeRDP团队的一款开源的远程桌面协议（RDP）的实现。 FreeRDP 3.24.2之前版本存在安全漏洞，该漏洞源于将相邻堆内存中的像素数据渲染到屏幕，可能向攻击者泄露敏感数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreeRDP FreeRDP < 3.24.2 -

II. Public POCs for CVE-2026-33985

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-33985

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-33985 (1)

Same Patch Batch · FreeRDP · 2026-03-30 · 9 CVEs total

CVE-2026-33984 7.5 HIGH FreeRDP: ClearCodec resize_vbar_entry() Heap OOB Write
CVE-2026-33986 7.5 HIGH FreeRDP: H.264 YUV Buffer Dimension Desync - Heap OOB Write
CVE-2026-33982 7.1 HIGH FreeRDP: Persistent Cache Allocator Mismatch - Heap OOB Read
CVE-2026-33987 7.1 HIGH FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write
CVE-2026-33983 6.5 MEDIUM FreeRDP: Progressive Codec Quant BYTE Underflow - UB + CPU DoS
CVE-2026-33995 5.3 MEDIUM FreeRDP: Possible double free in kerberos_AcceptSecurityContext
CVE-2026-33977 FreeRDP: DoS via WINPR_ASSERT in IMA ADPCM audio decoder (dsp.c:331)
CVE-2026-33952 FreeRDP: DoS via WINPR_ASSERT in rts_read_auth_verifier_no_checks

IV. Related Vulnerabilities

Same product: FreeRDP
Same vendor: FreeRDP
Same weakness: CWE-125

V. Comments for CVE-2026-33985

No comments yet

Leave a comment