Heap-data disclosure via overflowing caption bounds check
Published Sep 11, 2026 · Updated Sep 11, 2026
Out-of-bounds read in GStreamer gst-plugins-good before 1.28.7 allows context-dependent attackers to expose heap data via crafted media. The qtdemux CEA-608 parser checks a second caption atom with overflow-prone 32-bit unsigned arithmetic, allowing up to 244 bytes to be read past the sample buffer and emitted downstream. Exploitation requires a user or application to open the malicious MP4 or MOV file; the bounded consequences are adjacent heap disclosure and application crash.
Summary
What happened
Out-of-bounds read in GStreamer gst-plugins-good before 1.28.7 allows context-dependent attackers to expose heap data via crafted media. The qtdemux CEA-608 parser checks a second caption atom with overflow-prone 32-bit unsigned arithmetic, allowing up to 244 bytes to be read past the sample buffer and emitted downstream. Exploitation requires a user or application to open the malicious MP4 or MOV file; the bounded consequences are adjacent heap disclosure and application crash.
The record
- CVE
- CVE-2026-88914
- Published
- Sep 11, 2026
- Updated
- Sep 11, 2026
- Vendor
- 389 Directory Server
- Product
- Red Hat Enterprise Linux 6
- Classifications
- T1204.002
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 11, 2026CVE publishedPublication date reported by the CVE source.
- Sep 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
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CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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