CVE-2023-41763

MEDIUMPre-NVD 5.39.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-10-10), indicating real-world exploitation has been confirmed by US federal agencies. a secondary CVSS source baseline 5.3 retained for reference (NVD's own analysis pending). Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, secondary
Trending — 5 sources updated this weekExploited in the wild
5.3
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 90%CVSS: 5.3Exploit: NoneExposed: 0

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

Skype for Business Elevation of Privilege Vulnerability

CVSS v3
5.3
EG Score
9.0(high)
EG Risk
96(Attend)
EG Risk 96/100SSVC: 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%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
99.8%
KEV
⚠ Exploited

Published

October 10, 2023

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Jun 13, 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-2023-41763
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-2023-41763

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 81× in last 7d / 383× 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 728 total refreshes for this CVE.

  1. 2026-07-23 02:26 UTCEG score recompute
  2. 2026-07-22 22:52 UTCEG score recompute
  3. 2026-07-22 22:52 UTCVendor advisory
  4. 2026-07-22 22:52 UTCGHSA enrichment
  5. 2026-07-22 19:40 UTCCISA KEV update
  6. 2026-07-22 19:06 UTCGHSA enrichment
  7. 2026-07-22 15:18 UTCEG score recompute
  8. 2026-07-22 15:18 UTCVendor advisory
  9. 2026-07-22 15:18 UTCGHSA enrichment
  10. 2026-07-22 14:06 UTCEPSS rescore
  11. 2026-07-22 11:31 UTCVendor advisory
  12. 2026-07-22 11:31 UTCGHSA enrichment
  13. 2026-07-22 07:44 UTCVendor advisory
  14. 2026-07-22 07:44 UTCGHSA enrichment
  15. 2026-07-22 03:59 UTCVendor advisory
  16. 2026-07-22 03:59 UTCGHSA enrichment
  17. 2026-07-22 00:12 UTCVendor advisory
  18. 2026-07-22 00:11 UTCGHSA enrichment
  19. 2026-07-21 20:25 UTCVendor advisory
  20. 2026-07-21 20:25 UTCGHSA enrichment
  21. 2026-07-21 16:39 UTCEG score recompute
  22. 2026-07-21 16:39 UTCVendor advisory
  23. 2026-07-21 16:39 UTCGHSA enrichment
  24. 2026-07-21 15:23 UTCEPSS rescore
  25. 2026-07-21 15:23 UTCEPSS rescore
Show 75 more
  1. 2026-07-21 14:37 UTCCISA KEV update
  2. 2026-07-21 12:52 UTCVendor advisory
  3. 2026-07-21 12:52 UTCGHSA enrichment
  4. 2026-07-21 09:02 UTCVendor advisory
  5. 2026-07-21 09:02 UTCGHSA enrichment
  6. 2026-07-21 05:15 UTCVendor advisory
  7. 2026-07-21 05:15 UTCGHSA enrichment
  8. 2026-07-21 01:28 UTCVendor advisory
  9. 2026-07-21 01:28 UTCGHSA enrichment
  10. 2026-07-20 21:42 UTCVendor advisory
  11. 2026-07-20 21:42 UTCGHSA enrichment
  12. 2026-07-20 17:56 UTCEG score recompute
  13. 2026-07-20 17:56 UTCVendor advisory
  14. 2026-07-20 17:55 UTCGHSA enrichment
  15. 2026-07-20 17:06 UTCEPSS rescore
  16. 2026-07-20 14:10 UTCGHSA enrichment
  17. 2026-07-20 10:25 UTCGHSA enrichment
  18. 2026-07-20 06:40 UTCVendor advisory
  19. 2026-07-20 06:40 UTCGHSA enrichment
  20. 2026-07-20 02:42 UTCVendor advisory
  21. 2026-07-20 02:42 UTCGHSA enrichment
  22. 2026-07-19 22:56 UTCVendor advisory
  23. 2026-07-19 22:56 UTCGHSA enrichment
  24. 2026-07-19 19:10 UTCVendor advisory
  25. 2026-07-19 19:10 UTCGHSA enrichment
  26. 2026-07-19 15:25 UTCVendor advisory
  27. 2026-07-19 15:25 UTCGHSA enrichment
  28. 2026-07-19 11:40 UTCVendor advisory
  29. 2026-07-19 11:40 UTCGHSA enrichment
  30. 2026-07-19 07:54 UTCVendor advisory
  31. 2026-07-19 07:54 UTCGHSA enrichment
  32. 2026-07-19 04:08 UTCVendor advisory
  33. 2026-07-19 04:08 UTCGHSA enrichment
  34. 2026-07-19 00:22 UTCGHSA enrichment
  35. 2026-07-18 20:37 UTCVendor advisory
  36. 2026-07-18 20:37 UTCGHSA enrichment
  37. 2026-07-18 16:51 UTCVendor advisory
  38. 2026-07-18 16:51 UTCGHSA enrichment
  39. 2026-07-18 13:06 UTCVendor advisory
  40. 2026-07-18 13:06 UTCGHSA enrichment
  41. 2026-07-18 09:19 UTCVendor advisory
  42. 2026-07-18 09:19 UTCGHSA enrichment
  43. 2026-07-18 05:34 UTCVendor advisory
  44. 2026-07-18 05:33 UTCGHSA enrichment
  45. 2026-07-18 01:47 UTCVendor advisory
  46. 2026-07-18 01:47 UTCGHSA enrichment
  47. 2026-07-17 22:01 UTCVendor advisory
  48. 2026-07-17 22:01 UTCGHSA enrichment
  49. 2026-07-17 18:15 UTCVendor advisory
  50. 2026-07-17 18:15 UTCGHSA enrichment
  51. 2026-07-17 14:29 UTCVendor advisory
  52. 2026-07-17 14:29 UTCGHSA enrichment
  53. 2026-07-17 10:43 UTCVendor advisory
  54. 2026-07-17 10:43 UTCGHSA enrichment
  55. 2026-07-17 06:58 UTCVendor advisory
  56. 2026-07-17 06:58 UTCGHSA enrichment
  57. 2026-07-17 03:12 UTCVendor advisory
  58. 2026-07-17 03:12 UTCGHSA enrichment
  59. 2026-07-16 23:26 UTCVendor advisory
  60. 2026-07-16 23:26 UTCGHSA enrichment
  61. 2026-07-16 19:41 UTCVendor advisory
  62. 2026-07-16 19:41 UTCGHSA enrichment
  63. 2026-07-16 17:04 UTCCISA KEV update
  64. 2026-07-16 15:55 UTCVendor advisory
  65. 2026-07-16 15:54 UTCGHSA enrichment
  66. 2026-07-16 12:07 UTCGHSA enrichment
  67. 2026-07-16 08:22 UTCVendor advisory
  68. 2026-07-16 08:22 UTCGHSA enrichment
  69. 2026-07-16 04:36 UTCVendor advisory
  70. 2026-07-16 04:36 UTCGHSA enrichment
  71. 2026-07-16 00:51 UTCVendor advisory
  72. 2026-07-16 00:51 UTCGHSA enrichment
  73. 2026-07-15 21:05 UTCVendor advisory
  74. 2026-07-15 21:05 UTCGHSA enrichment
  75. 2026-07-15 17:19 UTCVendor advisory

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2023/CVE-2023-41763.yaml
    First seen Jan 1, 2023

    Skype for Business 2019 (SfB) - Blind Server-side Request Forgery

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2023-41763?
CVE-2023-41763 is a medium vulnerability published on October 10, 2023. Skype for Business Elevation of Privilege Vulnerability
When was CVE-2023-41763 disclosed?
CVE-2023-41763 was first published in the National Vulnerability Database on October 10, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-41763 actively exploited?
Yes. CISA added CVE-2023-41763 to the Known Exploited Vulnerabilities catalog on October 10, 2023, affecting Microsoft Skype for Business. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-41763?
CVE-2023-41763 has a CVSS v3 base score of 5.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2023-41763?
CVE-2023-41763 affects Microsoft Skype for Business. 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-2023-41763?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-41763, 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-2023-41763

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