CVE-2026-79515

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-09-09. A secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 4.3Exploit: Elevated riskExposed services: Not assessed

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

An out-of-bounds read in the stbtt_GetGlyphShape component of nothings stb commit 31c1ad3 allows attackers to cause a Denial of Service (DoS) via sending a crafted TTF file.

CVSS v3
4.3
EG Score
4.3MEDIUMhigh confidence
EG Risk
35
EG Risk 35/100CISA SSVC

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
Severity43% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
31st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 9, 2026

Last Modified

September 14, 2026

Advisory Details (1)

Auto-updated Sep 9, 2026
No patch confirmed yet.
generic

[SECURITY] Off-curve point at contour end causes OOB read in stbtt__GetGlyphShapeTT · Issue #1962 · nothings/stb · GitHub

https://github.com/nothings/stb/issues/1962

Vendor Advisories for CVE-2026-79515(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libstb0.0~git20220908.8b5f1f3+ds-1 ... 0.0~git20250907.fede005+ds-1 (8 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libstb0.0~git20241109.5c20573+ds-1, 0.0~git20250907.fede005+ds-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libstb0.0~git20241109.5c20573+ds-1, 0.0~git20250907.fede005+ds-1
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 73× 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. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 21:45 UTCGHSA enrichment
  3. 2026-10-03 20:18 UTCEG score recompute
  4. 2026-10-03 20:18 UTCGHSA enrichment
  5. 2026-10-03 14:26 UTCEPSS rescore
  6. 2026-10-02 18:50 UTCEG score recompute
  7. 2026-10-02 18:50 UTCGHSA enrichment
  8. 2026-10-02 17:57 UTCEPSS rescore
  9. 2026-10-01 19:50 UTCEPSS rescore
  10. 2026-10-01 17:23 UTCEG score recompute
  11. 2026-10-01 17:23 UTCGHSA enrichment
  12. 2026-09-30 15:00 UTCEG score recompute
  13. 2026-09-30 15:00 UTCGHSA enrichment
  14. 2026-09-29 15:24 UTCEPSS rescore
  15. 2026-09-29 12:09 UTCEG score recompute
  16. 2026-09-29 12:09 UTCGHSA enrichment
  17. 2026-09-28 13:52 UTCEPSS rescore
  18. 2026-09-28 10:43 UTCEG score recompute
  19. 2026-09-28 10:43 UTCGHSA enrichment
  20. 2026-09-27 13:48 UTCEPSS rescore
  21. 2026-09-27 09:17 UTCEG score recompute
  22. 2026-09-27 09:17 UTCGHSA enrichment
  23. 2026-09-26 15:59 UTCEPSS rescore
  24. 2026-09-26 07:49 UTCEG score recompute
  25. 2026-09-26 07:49 UTCGHSA enrichment
Show 48 more
  1. 2026-09-26 00:28 UTCEPSS rescore
  2. 2026-09-25 06:23 UTCEG score recompute
  3. 2026-09-25 06:23 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 04:56 UTCEG score recompute
  6. 2026-09-24 04:56 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 03:30 UTCEG score recompute
  9. 2026-09-23 03:30 UTCGHSA enrichment
  10. 2026-09-22 16:01 UTCEPSS rescore
  11. 2026-09-22 02:04 UTCEG score recompute
  12. 2026-09-22 02:03 UTCGHSA enrichment
  13. 2026-09-21 21:09 UTCEPSS rescore
  14. 2026-09-21 00:37 UTCEG score recompute
  15. 2026-09-21 00:37 UTCGHSA enrichment
  16. 2026-09-20 20:16 UTCEPSS rescore
  17. 2026-09-19 23:10 UTCEG score recompute
  18. 2026-09-19 23:10 UTCGHSA enrichment
  19. 2026-09-18 21:43 UTCEG score recompute
  20. 2026-09-18 21:43 UTCGHSA enrichment
  21. 2026-09-18 19:28 UTCEPSS rescore
  22. 2026-09-17 20:16 UTCEG score recompute
  23. 2026-09-17 20:16 UTCGHSA enrichment
  24. 2026-09-16 18:15 UTCEG score recompute
  25. 2026-09-16 18:15 UTCGHSA enrichment
  26. 2026-09-16 14:08 UTCEPSS rescore
  27. 2026-09-16 05:15 UTCEPSS rescore
  28. 2026-09-15 16:49 UTCEG score recompute
  29. 2026-09-15 16:49 UTCGHSA enrichment
  30. 2026-09-15 03:12 UTCEPSS rescore
  31. 2026-09-15 03:12 UTCEPSS rescore
  32. 2026-09-14 15:22 UTCEG score recompute
  33. 2026-09-14 15:22 UTCGHSA enrichment
  34. 2026-09-14 14:50 UTCEG score recompute
  35. 2026-09-14 14:50 UTCGHSA enrichment
  36. 2026-09-13 20:17 UTCEG score recompute
  37. 2026-09-13 20:17 UTCGHSA enrichment
  38. 2026-09-12 18:51 UTCEG score recompute
  39. 2026-09-12 18:51 UTCGHSA enrichment
  40. 2026-09-11 17:25 UTCEG score recompute
  41. 2026-09-11 17:25 UTCGHSA enrichment
  42. 2026-09-11 14:53 UTCEPSS rescore
  43. 2026-09-11 14:53 UTCEPSS rescore
  44. 2026-09-10 15:58 UTCEG score recompute
  45. 2026-09-10 15:58 UTCGHSA enrichment
  46. 2026-09-09 21:30 UTCEG score recompute
  47. 2026-09-09 20:36 UTCEG score recompute
  48. 2026-09-09 20:34 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-79515?
CVE-2026-79515 is a medium vulnerability published on September 9, 2026. An out-of-bounds read in the stbtt_GetGlyphShape component of nothings stb commit 31c1ad3 allows attackers to cause a Denial of Service (DoS) via sending a crafted TTF file.
When was CVE-2026-79515 disclosed?
CVE-2026-79515 was first published on September 9, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-79515 actively exploited?
CVE-2026-79515 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-79515?
CVE-2026-79515 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-79515?
No fix for CVE-2026-79515 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-79515 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-79515

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