CVE-2026-86514

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-09-08. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: Elevated riskExposed: 0

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

A weakness has been identified in vgmstream up to r2117. This issue affects the function sscanf of the file src/meta/txth.c of the component txth-txtp. This manipulation causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. Patch name: 4669d37a6af94866f6f0628678f9f90d46954e8b. To fix this issue, it is recommended to deploy a patch.

CVSS v3
6.3
EG Score
6.3(high)
EG Risk
59(Attend)
EG Risk 59/100SSVC: Attend

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
Severity63% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 11, 2026

Advisory Details (4)

Auto-updated Sep 8, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
generic

GitHub - vgmstream/vgmstream: vgmstream - A library for playback of various streamed audio formats used in video games. · GitHub

https://github.com/vgmstream/vgmstream/
github_commit

commit 4669d37a6af9 (vgmstream/vgmstream)

Fix landed in vgmstream/vgmstream commit 4669d37a6af9 — awaiting tagged release

https://github.com/vgmstream/vgmstream/commit/4669d37a6af94866f6f0628678f9f90d46954e8b
github_pr

misc

Fix merged in vgmstream/vgmstream PR #1956 on 2026-07-11 — awaiting tagged release

https://github.com/vgmstream/vgmstream/pull/1956
generic

Stack buffer overflow in TXTH and TXTP text parsing · Issue #1972 · vgmstream/vgmstream · GitHub

https://github.com/vgmstream/vgmstream/issues/1972

Vendor Advisories for CVE-2026-86514(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 54× 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. 2026-09-24 15:53 UTCEG score recompute
  2. 2026-09-24 15:53 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 16:35 UTCGHSA enrichment
  6. 2026-09-22 17:17 UTCEG score recompute
  7. 2026-09-22 17:17 UTCGHSA enrichment
  8. 2026-09-22 16:01 UTCEPSS rescore
  9. 2026-09-21 21:09 UTCEPSS rescore
  10. 2026-09-21 17:37 UTCEG score recompute
  11. 2026-09-21 17:37 UTCGHSA enrichment
  12. 2026-09-20 20:16 UTCEPSS rescore
  13. 2026-09-20 18:12 UTCGHSA enrichment
  14. 2026-09-19 18:55 UTCEG score recompute
  15. 2026-09-19 18:55 UTCGHSA enrichment
  16. 2026-09-18 19:38 UTCEG score recompute
  17. 2026-09-18 19:38 UTCGHSA enrichment
  18. 2026-09-18 19:28 UTCEPSS rescore
  19. 2026-09-17 20:20 UTCEG score recompute
  20. 2026-09-17 20:20 UTCGHSA enrichment
  21. 2026-09-17 19:32 UTCEPSS rescore
  22. 2026-09-16 18:18 UTCEG score recompute
  23. 2026-09-16 18:18 UTCGHSA enrichment
  24. 2026-09-16 14:09 UTCEPSS rescore
  25. 2026-09-16 05:15 UTCEPSS rescore
Show 29 more
  1. 2026-09-15 18:41 UTCEG score recompute
  2. 2026-09-15 18:41 UTCGHSA enrichment
  3. 2026-09-15 03:12 UTCEPSS rescore
  4. 2026-09-15 03:12 UTCEPSS rescore
  5. 2026-09-14 19:16 UTCGHSA enrichment
  6. 2026-09-13 19:59 UTCEG score recompute
  7. 2026-09-13 19:59 UTCGHSA enrichment
  8. 2026-09-12 20:41 UTCEG score recompute
  9. 2026-09-12 20:41 UTCGHSA enrichment
  10. 2026-09-11 21:23 UTCEG score recompute
  11. 2026-09-11 21:23 UTCGHSA enrichment
  12. 2026-09-11 21:20 UTCNVD updateCVSS v4 → 2.1
  13. 2026-09-11 20:47 UTCEG score recompute
  14. 2026-09-11 20:47 UTCGHSA enrichment
  15. 2026-09-11 20:43 UTCMITRE cvelistV5CVSS v4 → 5.3
  16. 2026-09-11 14:53 UTCEPSS rescore
  17. 2026-09-11 14:53 UTCEPSS rescore
  18. 2026-09-11 11:44 UTCGHSA enrichment
  19. 2026-09-10 12:18 UTCEG score recompute
  20. 2026-09-10 12:18 UTCGHSA enrichment
  21. 2026-09-09 13:01 UTCEG score recompute
  22. 2026-09-09 13:01 UTCGHSA enrichment
  23. 2026-09-08 22:01 UTCEPSS rescore
  24. 2026-09-08 13:42 UTCGHSA enrichment
  25. 2026-09-08 03:34 UTCEG score recompute
  26. 2026-09-08 03:34 UTCGHSA enrichment
  27. 2026-09-08 03:33 UTCNVD updateCVSS v4 → 2.1
  28. 2026-09-08 02:50 UTCEG score recompute
  29. 2026-09-08 02:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-86514?
CVE-2026-86514 is a medium vulnerability published on September 8, 2026. A weakness has been identified in vgmstream up to r2117. This issue affects the function sscanf of the file src/meta/txth.c of the component txth-txtp. This manipulation causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made available to the…
When was CVE-2026-86514 disclosed?
CVE-2026-86514 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86514 actively exploited?
CVE-2026-86514 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 62.2% of all scored CVEs.
What is the CVSS score of CVE-2026-86514?
CVE-2026-86514 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-86514?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86514, 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

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