CVE-2026-88914

MEDIUMPre-NVD 4.44.4—
EchelonGraph scoreHIGH confidence

Score 4.4 from GitHub Security Advisory published 2026-09-11. a secondary CVSS source baseline 4.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A flaw was found in GStreamer's gst-plugins-good isomp4 plugin. When processing a specially crafted MP4 or MOV file containing CEA-608 closed-caption data, an integer overflow in 32-bit unsigned arithmetic can bypass a bounds check in the caption parser. This leads to an out-of-bounds heap read of up to 244 bytes, which is then included in the downstream caption output. An attacker could exploit this by tricking a user into opening a malicious media file, potentially resulting in disclosure of adjacent heap memory or application crash.

CVSS v3
4.4
EG Score
4.4(high)
EG Risk
20(Track)
EG Risk 20/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity44% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

September 11, 2026

Last Modified

September 16, 2026

Advisory Details (4)

Auto-updated Sep 11, 2026
Patch available. Sources: redhat.
generic

GStreamer Security Advisory

https://gstreamer.freedesktop.org/security/sa-2026-0079.html
generic

qtdemux: Ensure enough data is available for reading closed caption boxes (!12433) · Merge requests · GStreamer / gstreamer · GitLab

https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12433
redhat

2531416 – (CVE-2026-88914) CVE-2026-88914 gstreamer1-plugins-good: gstreamer: integer overflow and out-of-bounds read in qtdemux CEA-608 closed-caption parser

https://bugzilla.redhat.com/show_bug.cgi?id=2531416
redhat Patch Available

CVE-2026-88914 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-88914

Vendor Advisories for CVE-2026-88914(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 21× in last 7d / 35× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-20 21:43 UTCEG score recompute
  2. 2026-09-20 21:43 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-19 21:31 UTCEG score recompute
  5. 2026-09-19 21:31 UTCGHSA enrichment
  6. 2026-09-18 21:19 UTCEG score recompute
  7. 2026-09-18 21:19 UTCGHSA enrichment
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-17 20:13 UTCEG score recompute
  10. 2026-09-17 20:13 UTCGHSA enrichment
  11. 2026-09-17 19:32 UTCEPSS rescore
  12. 2026-09-16 19:59 UTCGHSA enrichment
  13. 2026-09-16 18:07 UTCEG score recompute
  14. 2026-09-16 18:07 UTCGHSA enrichment
  15. 2026-09-16 14:09 UTCEPSS rescore
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-15 16:16 UTCEG score recompute
  18. 2026-09-15 16:16 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-14 16:04 UTCEG score recompute
  21. 2026-09-14 16:04 UTCGHSA enrichment
  22. 2026-09-13 16:48 UTCEPSS rescore
  23. 2026-09-13 15:52 UTCGHSA enrichment
  24. 2026-09-12 15:41 UTCEG score recompute
  25. 2026-09-12 15:41 UTCGHSA enrichment
Show 10 more
  1. 2026-09-12 15:02 UTCEPSS rescore
  2. 2026-09-11 15:29 UTCEG score recompute
  3. 2026-09-11 15:29 UTCGHSA enrichment
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-11 14:20 UTCEG score recompute
  7. 2026-09-11 14:20 UTCGHSA enrichment
  8. 2026-09-11 02:20 UTCEG score recompute
  9. 2026-09-11 02:00 UTCEG score recompute
  10. 2026-09-11 01:59 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-88914?
CVE-2026-88914 is a medium vulnerability published on September 11, 2026. A flaw was found in GStreamer's gst-plugins-good isomp4 plugin. When processing a specially crafted MP4 or MOV file containing CEA-608 closed-caption data, an integer overflow in 32-bit unsigned arithmetic can bypass a bounds check in the caption parser. This leads to an out-of-bounds heap read of…
When was CVE-2026-88914 disclosed?
CVE-2026-88914 was first published in the National Vulnerability Database on September 11, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-88914 actively exploited?
CVE-2026-88914 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 97.6% of all scored CVEs.
What is the CVSS score of CVE-2026-88914?
CVE-2026-88914 has a CVSS v3 base score of 4.4 (NVD).
How do I remediate CVE-2026-88914?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-88914, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-88914

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