CVE-2026-124311— Fraunhofer HHI VVdeC through 3.2.1 NULL Pointer Dereference via InterPrediction::xPredInterBlk

Quick assessment

Affected

fraunhoferhhi vvdec

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.

Fraunhofer HHI 的 VVdeC 版本（3.2.1 及更早版本）在 InterPrediction::xPredInterBlk 函数中存在空指针解引用漏洞。攻击者可通过切换序列参数集（SPS）以启用参考帧环绕（reference wrap-around）功能，导致解码器崩溃。攻击者可构造一个 VVC 比特流，激活一个将 sps_ref_wraparound_enabled_flag 标志位设置为启用的新 SPS，从而引发对缺失的 PIC_RECON_WRAP 缓冲区的读取操作，最终造成拒绝服务（DoS

CVSS 5.5 · Medium Updated Nov 07, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Fraunhofer HHI VVdeC through 3.2.1 NULL Pointer Dereference via InterPrediction::xPredInterBlk

Source: CVE Program / CVE List V5

Vulnerability Description

Fraunhofer HHI VVdeC through 3.2.1 contains a NULL pointer dereference vulnerability in InterPrediction::xPredInterBlk that allows attackers to crash the decoder by switching SPS to enable reference wrap-around. Attackers can supply a crafted VVC bitstream activating a new SPS with sps_ref_wraparound_enabled_flag set, causing reads from missing PIC_RECON_WRAP buffers and denial of service.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:L/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
fraunhoferhhi	vvdec	0 ~ 3.2.1	-

II. Public POCs for CVE-2026-124311

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III. Intelligence Information for CVE-2026-124311

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Other References for CVE-2026-124311 (5)

https://github.com/fraunhoferhhi/vvdec/blob/v3.2.1/source/Lib/CommonLib/InterPrediction.cpp#L790-L796 technical-description
https://github.com/fraunhoferhhi/vvdec product
https://github.com/fraunhoferhhi/vvdec/issues/420 issue-tracking
https://github.com/fraunhoferhhi/vvdec/commit/fb73aca37b48f89814f57edbc8072a37d47bbe06 patch
https://www.vulncheck.com/advisories/fraunhofer-hhi-vvdec-through-3.2.1-null-pointer-dereference-via-interprediction-xpredinterblk third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-124311

Same Patch Batch · fraunhoferhhi · 2026-11-07 · 6 CVEs total

CVE-2026-124310	6.1 MEDIUM	Fraunhofer HHI VVdeC before 3.2.1 Out-of-Bounds Read via Slice::getRefPic
CVE-2026-124309	6.1 MEDIUM	Fraunhofer HHI VVdeC before 3.2.1 Heap Out-of-Bounds Read via SEIReader::xParseSEIScalable
CVE-2026-124308	5.8 MEDIUM	Fraunhofer HHI VVdeC before 3.2.1 Use-After-Free via DecLibRecon::createSubPicRefBufs
CVE-2026-124307	5.8 MEDIUM	Fraunhofer HHI VVdeC before 3.2.1 Heap Use-After-Free via ALF APS Redefinition
CVE-2026-124312	4.7 MEDIUM	Fraunhofer HHI VVdeC through 3.2.1 Heap Out-of-Bounds Read via CodingStructure::getColInfo

IV. Related Vulnerabilities

Same product: vvdec

Same vendor: fraunhoferhhi

Same weakness: CWE-476