CVE-2026-44963

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 2.4%, top 18% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this weekElevated
9.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 9.4Exploit: Elevated riskExposed: 0

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

A vulnerability allowing remote code execution (RCE) on the Backup Server by an authenticated domain user.

CVSS v3
9.4
EG Score
9.4(medium)
EG Risk
63(Track*)
EG Risk 63/100SSVC: Track*

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
Severity94% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
2%
EPSS %ILE
82%
KEV
Not listed

Published

June 9, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Aug 23, 2026
No patch confirmed yet.
generic

KB4869: Vulnerability Resolved in Veeam Backup & Replication 12.3.2.4854

https://www.veeam.com/kb4869

Vendor Advisories for CVE-2026-44963(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 13× in last 7d / 158× 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 412 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCSentinelXofficial/CVE-2026-44963
    First seen Jun 18, 2026

    Detection scripts, patch checker & hardening guide for CVE-2026-44963 (Veeam B&R RCE)

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-44963?
CVE-2026-44963 is a critical vulnerability published on June 9, 2026. A vulnerability allowing remote code execution (RCE) on the Backup Server by an authenticated domain user.
When was CVE-2026-44963 disclosed?
CVE-2026-44963 was first published in the National Vulnerability Database on June 9, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44963 actively exploited?
CVE-2026-44963 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 17.7% of all scored CVEs.
What is the CVSS score of CVE-2026-44963?
CVE-2026-44963 has a CVSS v3 base score of 9.4 (NVD).
How do I remediate CVE-2026-44963?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44963, 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-2026-44963

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