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CVE-2026-18299— GStreamer rtpsbcdepay Use-After-Free Remote Code Execution Vulnerability

Quick assessment

Affected
GStreamer GStreamer
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.

GStreamer rtpsbcdepay 使用后释放（Use-After-Free）远程代码执行漏洞。该漏洞允许远程攻击者在受影响的 GStreamer 安装环境中执行任意代码。利用此漏洞需要与 GStreamer 库进行交互，但具体的攻击向量可能因具体实现方式而异。 该缺陷存在于对 RTP 有效载荷元素的处理过程中。其根本原因在于，在对对象执行操作之前，未验证该对象是否仍然存在。攻击者可利用此漏洞，在当前进程的上下文中执行代码。此前该漏洞编号为 ZDI-CAN-29787。

AI Predicted 8.8 Difficulty: Hard EPSS 0.28% · P21

Affected Version Matrix 1

VendorProduct Version RangeStatus
GStreamer GStreamer 99fde1184fe8b12d0721230941c1bf2080913183 affected
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I. Basic Information for CVE-2026-18299

Vulnerability Information
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Vulnerability Title
GStreamer rtpsbcdepay Use-After-Free Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
GStreamer rtpsbcdepay Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the processing of RTP payload elements. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29787.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
GStreamer GStreamer 99fde1184fe8b12d0721230941c1bf2080913183 -

II. Public POCs for CVE-2026-18299

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III. Intelligence Information for CVE-2026-18299

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Vendor Advisories for CVE-2026-18299 (2)

Same Patch Batch · GStreamer · 2026-08-20 · 5 CVEs total

CVE-2026-18296 GStreamer MRF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
CVE-2026-18295 GStreamer MRF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
CVE-2026-18298 GStreamer PNG File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
CVE-2026-18297 GStreamer OGG File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability

IV. Related Vulnerabilities

Same product: GStreamer
Same vendor: GStreamer
Same weakness: CWE-416

V. Comments for CVE-2026-18299

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