ZDI-26-283: GStreamer qtdemux Stack-based Buffer Overflow Remote Code Execution Vulnerability
Source Zero Day Initiative
Not known to be exploited.
Data as of 30 Oct 2026, 11:52 UTC
Rated High by Zero Day Initiative · No CVSS score from NVD or the CNA
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
Public on cve.org; its publication date is not in this record
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
AI-suggested
GStreamer has issued an official update that corrects this vulnerability. Users and administrators should apply the update promptly to remediate the issue. Patch status is confirmed by the vendor advisory linked in the source content.
Description
A stack-based buffer overflow vulnerability exists in the GStreamer qtdemux component when parsing UncompressedFrameConfigBox structures. This flaw allows remote attackers to execute arbitrary code by exploiting improper validation of user-supplied data length before copying it to a fixed-length stack buffer. GStreamer has issued an update to address this vulnerability. The vulnerability has a CVSS score of 7.8 and is rated critical.