CVE-2023-21715

CRITICALNVD 7.39.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-02-14), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.3 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 12%CVSS: 7.3Exploit: cisa kev · ssvc active · epss top5pctExposed: 0

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

Microsoft Publisher Security Feature Bypass Vulnerability

CVSS v3
7.3
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: 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
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
12%
EPSS %ILE
96%
KEV
⚠ Exploited

Published

February 14, 2023

Last Modified

October 30, 2025

Advisory Details (2)

Auto-updated Jun 9, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: microsoft, cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21715
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21715

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 64× in last 7d / 357× 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.

Showing the most recent 100 of 722 total refreshes for this CVE.

  1. 2026-07-27 17:17 UTCCISA KEV update
  2. 2026-07-27 16:58 UTCEG score recompute
  3. 2026-07-27 16:58 UTCVendor advisory
  4. 2026-07-27 16:58 UTCGHSA enrichment
  5. 2026-07-27 12:38 UTCGHSA enrichment
  6. 2026-07-27 08:18 UTCVendor advisory
  7. 2026-07-27 08:18 UTCGHSA enrichment
  8. 2026-07-27 03:58 UTCVendor advisory
  9. 2026-07-27 03:58 UTCGHSA enrichment
  10. 2026-07-26 23:39 UTCVendor advisory
  11. 2026-07-26 23:39 UTCGHSA enrichment
  12. 2026-07-26 19:20 UTCVendor advisory
  13. 2026-07-26 19:19 UTCGHSA enrichment
  14. 2026-07-26 14:59 UTCEG score recompute
  15. 2026-07-26 14:59 UTCVendor advisory
  16. 2026-07-26 14:59 UTCGHSA enrichment
  17. 2026-07-26 14:52 UTCEPSS rescore
  18. 2026-07-26 14:52 UTCEPSS rescore
  19. 2026-07-26 10:39 UTCEG score recompute
  20. 2026-07-26 10:39 UTCVendor advisory
  21. 2026-07-26 10:39 UTCGHSA enrichment
  22. 2026-07-26 06:19 UTCVendor advisory
  23. 2026-07-26 06:19 UTCGHSA enrichment
  24. 2026-07-26 01:57 UTCEG score recompute
  25. 2026-07-26 01:57 UTCVendor advisory
Show 75 more
  1. 2026-07-26 01:57 UTCGHSA enrichment
  2. 2026-07-25 14:16 UTCEPSS rescore
  3. 2026-07-25 14:16 UTCEPSS rescore
  4. 2026-07-24 14:15 UTCEPSS rescore
  5. 2026-07-23 14:16 UTCEPSS rescore
  6. 2026-07-23 14:16 UTCEPSS rescore
  7. 2026-07-23 02:18 UTCEG score recompute
  8. 2026-07-22 21:40 UTCEG score recompute
  9. 2026-07-22 21:40 UTCVendor advisory
  10. 2026-07-22 21:40 UTCGHSA enrichment
  11. 2026-07-22 19:40 UTCCISA KEV update
  12. 2026-07-22 17:04 UTCEG score recompute
  13. 2026-07-22 17:04 UTCVendor advisory
  14. 2026-07-22 17:04 UTCGHSA enrichment
  15. 2026-07-22 14:06 UTCEPSS rescore
  16. 2026-07-22 12:45 UTCVendor advisory
  17. 2026-07-22 12:45 UTCGHSA enrichment
  18. 2026-07-22 08:24 UTCVendor advisory
  19. 2026-07-22 08:24 UTCGHSA enrichment
  20. 2026-07-22 04:05 UTCVendor advisory
  21. 2026-07-22 04:05 UTCGHSA enrichment
  22. 2026-07-21 23:45 UTCVendor advisory
  23. 2026-07-21 23:44 UTCGHSA enrichment
  24. 2026-07-21 17:27 UTCEG score recompute
  25. 2026-07-21 17:27 UTCVendor advisory
  26. 2026-07-21 17:27 UTCGHSA enrichment
  27. 2026-07-21 15:23 UTCEPSS rescore
  28. 2026-07-21 14:37 UTCCISA KEV update
  29. 2026-07-21 13:06 UTCVendor advisory
  30. 2026-07-21 13:06 UTCGHSA enrichment
  31. 2026-07-21 08:47 UTCVendor advisory
  32. 2026-07-21 08:47 UTCGHSA enrichment
  33. 2026-07-21 04:27 UTCVendor advisory
  34. 2026-07-21 04:27 UTCGHSA enrichment
  35. 2026-07-21 00:07 UTCVendor advisory
  36. 2026-07-21 00:06 UTCGHSA enrichment
  37. 2026-07-20 19:47 UTCEG score recompute
  38. 2026-07-20 19:47 UTCVendor advisory
  39. 2026-07-20 19:46 UTCGHSA enrichment
  40. 2026-07-20 17:05 UTCEPSS rescore
  41. 2026-07-20 15:26 UTCGHSA enrichment
  42. 2026-07-20 11:03 UTCGHSA enrichment
  43. 2026-07-20 06:43 UTCVendor advisory
  44. 2026-07-20 06:43 UTCGHSA enrichment
  45. 2026-07-20 01:47 UTCVendor advisory
  46. 2026-07-20 01:47 UTCGHSA enrichment
  47. 2026-07-19 21:27 UTCVendor advisory
  48. 2026-07-19 21:27 UTCGHSA enrichment
  49. 2026-07-19 17:07 UTCEG score recompute
  50. 2026-07-19 17:07 UTCVendor advisory
  51. 2026-07-19 17:07 UTCGHSA enrichment
  52. 2026-07-19 14:29 UTCEPSS rescore
  53. 2026-07-19 14:29 UTCEPSS rescore
  54. 2026-07-19 12:47 UTCVendor advisory
  55. 2026-07-19 12:47 UTCGHSA enrichment
  56. 2026-07-19 08:28 UTCVendor advisory
  57. 2026-07-19 08:28 UTCGHSA enrichment
  58. 2026-07-19 04:08 UTCEG score recompute
  59. 2026-07-19 04:08 UTCVendor advisory
  60. 2026-07-19 04:08 UTCGHSA enrichment
  61. 2026-07-19 02:27 UTCEPSS rescore
  62. 2026-07-19 02:27 UTCEPSS rescore
  63. 2026-07-18 23:47 UTCGHSA enrichment
  64. 2026-07-18 19:27 UTCVendor advisory
  65. 2026-07-18 19:27 UTCGHSA enrichment
  66. 2026-07-18 15:07 UTCVendor advisory
  67. 2026-07-18 15:07 UTCGHSA enrichment
  68. 2026-07-18 10:47 UTCEG score recompute
  69. 2026-07-18 10:47 UTCVendor advisory
  70. 2026-07-18 10:47 UTCGHSA enrichment
  71. 2026-07-18 10:03 UTCEPSS rescore
  72. 2026-07-18 10:03 UTCEPSS rescore
  73. 2026-07-18 06:27 UTCVendor advisory
  74. 2026-07-18 06:27 UTCGHSA enrichment
  75. 2026-07-18 02:07 UTCVendor advisory

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Frequently asked(6)

What is CVE-2023-21715?
CVE-2023-21715 is a critical vulnerability published on February 14, 2023. Microsoft Publisher Security Feature Bypass Vulnerability
When was CVE-2023-21715 disclosed?
CVE-2023-21715 was first published in the National Vulnerability Database on February 14, 2023, with the most recent update on October 30, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-21715 actively exploited?
Yes. CISA added CVE-2023-21715 to the Known Exploited Vulnerabilities catalog on February 14, 2023, affecting Microsoft Office. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-21715?
CVE-2023-21715 has a CVSS v3 base score of 7.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2023-21715?
CVE-2023-21715 affects Microsoft Office. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2023-21715?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-21715, 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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