CVE-2026-33982— FreeRDP: Persistent Cache Allocator Mismatch - Heap OOB Read
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I. Basic Information for CVE-2026-33982
Vulnerability Information
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Vulnerability Title
FreeRDP: Persistent Cache Allocator Mismatch - Heap OOB Read
Source: NVD (National Vulnerability Database)
Vulnerability Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, there is a heap-buffer-overflow READ vulnerability at 24 bytes before the allocation, in winpr_aligned_offset_recalloc(). This issue has been patched in version 3.24.2.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
FreeRDP 缓冲区错误漏洞
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之前版本存在缓冲区错误漏洞，该漏洞源于winpr_aligned_offset_recalloc函数中存在堆缓冲区过度读取漏洞。
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
II. Public POCs for CVE-2026-33982
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 11599 chars
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III. Intelligence Information for CVE-2026-33982
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Same Patch Batch · FreeRDP · 2026-03-30 · 9 CVEs total
| CVE-2026-33986 | 7.5 HIGH | FreeRDP: H.264 YUV Buffer Dimension Desync - Heap OOB Write |
| CVE-2026-33984 | 7.5 HIGH | FreeRDP: ClearCodec resize_vbar_entry() Heap OOB Write |
| 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-2026-33985 | 5.9 MEDIUM | FreeRDP: ClearCodec Glyph Cache Count Desync - Heap OOB Read |
| CVE-2026-33995 | 5.3 MEDIUM | FreeRDP: Possible double free in kerberos_AcceptSecurityContext |
| CVE-2026-33952 | FreeRDP: DoS via WINPR_ASSERT in rts_read_auth_verifier_no_checks | |
| CVE-2026-33977 | FreeRDP: DoS via WINPR_ASSERT in IMA ADPCM audio decoder (dsp.c:331) |
IV. Related Vulnerabilities
Same product: FreeRDP
- CVE-2026-40254
FreeRDP: contains_dotdot() off-by-one allows drive channel p - CVE-2026-33995
FreeRDP: Possible double free in kerberos_AcceptSecurityCont - CVE-2026-33987
FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write - CVE-2026-33986
FreeRDP: H.264 YUV Buffer Dimension Desync - Heap OOB Write - CVE-2026-33985
FreeRDP: ClearCodec Glyph Cache Count Desync - Heap OOB Read
Same vendor: FreeRDP
- CVE-2026-40254
FreeRDP: contains_dotdot() off-by-one allows drive channel p - CVE-2026-33995
FreeRDP: Possible double free in kerberos_AcceptSecurityCont - CVE-2026-33987
FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write - CVE-2026-33986
FreeRDP: H.264 YUV Buffer Dimension Desync - Heap OOB Write - CVE-2026-33985
FreeRDP: ClearCodec Glyph Cache Count Desync - Heap OOB Read
Same weakness: CWE-125
- CVE-2026-8177
XML::LibXML versions through 2.0210 for Perl read out-of-bou - CVE-2026-6104
Global buffer over-read in mb_convert_encoding() with attack - CVE-2026-7258
Out-of-bounds read in urldecode() on NetBSD - CVE-2026-8186
Open5GS NF client.c ogs_sbi_client_send_via_scp_or_sepp out- - CVE-2026-3508
ASUS System Control Interface 缓冲区错误漏洞
V. Comments for CVE-2026-33982
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