CVE-2025-15647

MEDIUMPre-NVD 5.55.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 5.5 from GitHub Security Advisory published 2026-09-05. The CNA's CVSS baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Trending — 3 sources updated this weekElevated
5.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 5.5Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

CDT before 1.4.5 contains an out-of-bounds read vulnerability in the opposedVertexInd() function when constraint edge intersections are computed in floating point and round outside adjacent triangles. Attackers can supply nearly-degenerate constraint edges through geometry data to trigger an out-of-bounds array access that crashes the calling process.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
41
EG Risk 41/100

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 (value × EchelonGraph’s weight)
Severity55% × 45%
The EG Score, 5.5 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
19th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 5, 2026

Last Modified

September 24, 2026

Advisory Details (6)

Auto-updated Sep 5, 2026
Patch available. Sources: github_commit, github_release.
Web page

CDT before 1.4.5 Out-of-Bounds Read via opposedVertexInd | Advisories | VulnCheck

https://www.vulncheck.com/advisories/cdt-before-1.4.5-out-of-bounds-read-via-opposedvertexind
Web page

GitHub - artem-ogre/CDT: Constrained Delaunay Triangulation (C++) · GitHub

https://github.com/artem-ogre/CDT
GitHub release Patch Available

1.4.5 Bugfixes and improvements

Patch available: artem-ogre/CDT 1.4.5

https://github.com/artem-ogre/CDT/releases/tag/1.4.5
Web page

CDT/CDT/include/CDTUtils.hpp at 1.4.4 · artem-ogre/CDT · GitHub

https://github.com/artem-ogre/CDT/blob/1.4.4/CDT/include/CDTUtils.hpp#L175
GitHub commit Patch Available

commit bf0d11ebfe3d (artem-ogre/CDT)

Patch available: artem-ogre/CDT 1.4.5 (contains commit bf0d11ebfe3d)

https://github.com/artem-ogre/CDT/commit/bf0d11ebfe3da0da72aed91816f665aef1b447cc
Web page

Out-of-bounds memory access in CDT::opposedVertexInd() leading to segmentation fault (SEGV) · Issue #212 · artem-ogre/CDT · GitHub

https://github.com/artem-ogre/CDT/issues/212

Vendor Advisories for CVE-2025-15647(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 19× in last 7d / 75× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 2 repeat rows among the latest 100 are merged into the row they repeat.

  1. 2026-10-11 20:53 UTCEG score recompute
  2. 2026-10-11 19:03 UTCEG score recompute
  3. 2026-10-11 15:43 UTCEG score recompute
  4. 2026-10-11 13:46 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  5. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  6. 2026-10-10 03:37 UTCEG score recompute
  7. 2026-10-10 03:37 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  8. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  9. 2026-10-09 01:15 UTCEG score recompute
  10. 2026-10-09 01:15 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  11. 2026-10-08 17:08 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  12. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  13. 2026-10-07 22:53 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  14. 2026-10-06 19:40 UTCEG score recompute
  15. 2026-10-06 19:40 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  16. 2026-10-06 15:16 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  17. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  18. 2026-10-05 17:12 UTCEG score recompute
  19. 2026-10-05 17:11 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  20. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  21. 2026-10-04 14:51 UTCEG score recompute
  22. 2026-10-04 14:51 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  23. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  24. 2026-10-03 12:30 UTCEG score recompute
  25. 2026-10-03 12:30 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
Show 73 more
  1. 2026-10-02 08:01 UTCEG score recompute
  2. 2026-10-02 08:01 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  3. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  4. 2026-10-01 05:40 UTCEG score recompute
  5. 2026-10-01 05:40 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  6. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  7. 2026-09-30 03:19 UTCEG score recompute
  8. 2026-09-30 03:19 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  9. 2026-09-29 00:58 UTCEG score recompute
  10. 2026-09-29 00:58 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  11. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  12. 2026-09-27 22:37 UTCEG score recompute
  13. 2026-09-27 22:37 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  14. 2026-09-26 20:16 UTCEG score recompute
  15. 2026-09-26 20:16 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  16. 2026-09-26 15:57 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  17. 2026-09-25 17:15 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  18. 2026-09-24 14:53 UTCEG score recompute
  19. 2026-09-24 14:53 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  20. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  21. 2026-09-23 17:23 UTCEG score recompute
  22. 2026-09-23 17:23 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  23. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  24. 2026-09-22 23:06 UTCEG score recompute
  25. 2026-09-22 23:06 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  26. 2026-09-22 14:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  27. 2026-09-21 20:45 UTCEG score recompute
  28. 2026-09-21 20:45 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  29. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  30. 2026-09-20 18:24 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  31. 2026-09-19 16:03 UTCEG score recompute
  32. 2026-09-19 16:03 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  33. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  34. 2026-09-18 13:43 UTCEG score recompute
  35. 2026-09-18 13:43 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  36. 2026-09-17 11:22 UTCEG score recompute
  37. 2026-09-17 11:21 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  38. 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  39. 2026-09-16 09:00 UTCEG score recompute
  40. 2026-09-16 09:00 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  41. 2026-09-16 05:13 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  42. 2026-09-15 05:35 UTCEG score recompute
  43. 2026-09-15 05:35 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  44. 2026-09-15 03:08 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  45. 2026-09-14 03:01 UTCEG score recompute
  46. 2026-09-14 03:00 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  47. 2026-09-13 16:45 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  48. 2026-09-13 00:40 UTCEG score recompute
  49. 2026-09-13 00:40 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  50. 2026-09-12 14:59 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  51. 2026-09-11 22:19 UTCEG score recompute
  52. 2026-09-11 22:18 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  53. 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  54. 2026-09-11 09:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  55. 2026-09-10 19:56 UTCEG score recompute
  56. 2026-09-10 19:56 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  57. 2026-09-10 09:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  58. 2026-09-09 17:35 UTCEG score recompute
  59. 2026-09-09 17:35 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  60. 2026-09-08 21:59 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  61. 2026-09-08 15:12 UTCEG score recompute
  62. 2026-09-08 15:12 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  63. 2026-09-08 14:15 UTCEG score recompute
  64. 2026-09-08 14:15 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  65. 2026-09-07 17:04 UTCEG score recompute
  66. 2026-09-07 17:04 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  67. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  68. 2026-09-06 14:43 UTCEG score recompute
  69. 2026-09-06 14:43 UTCGHSA enrichmentGHSA-gg9p-3jmx-h6rw · GitHub CVSS 5.5
  70. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  71. 2026-09-05 12:22 UTCEG score recompute
  72. 2026-09-05 11:44 UTCEG score recomputeFirst assessed: 5.5 MEDIUM
  73. 2026-09-05 11:42 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-15647?
CVE-2025-15647 is a medium-severity vulnerability; its CVE record was published on September 5, 2026. CDT before 1.4.5 contains an out-of-bounds read vulnerability in the opposedVertexInd() function when constraint edge intersections are computed in floating point and round outside adjacent triangles. Attackers can supply nearly-degenerate constraint edges through geometry data to trigger an…
When was CVE-2025-15647 made public?
CVE-2025-15647 was made public on November 5, 2025: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on September 5, 2026. EchelonGraph's copy of the record carries a last-modified date of September 24, 2026; the record at its source may have been updated since.
Is CVE-2025-15647 actively exploited?
CVE-2025-15647 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (19th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-15647?
CVE-2025-15647 has a CVSS base score of 5.5 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2025-15647?
A fix for CVE-2025-15647 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-15647 are linked in the Vendor Advisories panel on this page.

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