CVE-2025-64393

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: 0.4% (27th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 4 sources updated this week
9.4EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.4Exploit: None knownExposed services: Not assessed

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

This vulnerability in Veeam Backup & Replication allows a Backup Viewer to execute arbitrary code as SYSTEM on the backup server.

CVSS v3
9.4
EG Score
9.4CRITICALmedium confidence
EG Risk
42
EG Risk 42/100

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)
Severity94% × 45%
The EG Score, 9.4 of 10.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
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 none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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: 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
27th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track 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 none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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)14 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 total (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

October 7, 2026

Last Modified

October 8, 2026

Advisory Details (1)

Auto-updated Oct 8, 2026
No fix on record yet.
Web page

KB4934: Vulnerabilities Resolved in Veeam Backup & Replication 12.3.2 P4

https://www.veeam.com/KB4934

Vendor Advisories for CVE-2025-64393(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 47× in last 7d / 47× 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.

  1. 2026-10-11 20:14 UTCEG score recompute
  2. 2026-10-11 20:14 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  3. 2026-10-11 18:36 UTCEG score recompute
  4. 2026-10-11 15:50 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  5. 2026-10-11 15:11 UTCEG score recompute
  6. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  7. 2026-10-11 11:28 UTCEG score recompute
  8. 2026-10-11 11:28 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  9. 2026-10-11 07:06 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  10. 2026-10-11 02:42 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  11. 2026-10-10 22:20 UTCEG score recompute
  12. 2026-10-10 22:20 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  13. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  14. 2026-10-10 17:58 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  15. 2026-10-10 13:35 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  16. 2026-10-10 09:14 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  17. 2026-10-10 04:49 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  18. 2026-10-10 00:27 UTCEG score recompute
  19. 2026-10-10 00:27 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  20. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  21. 2026-10-09 20:05 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  22. 2026-10-09 15:43 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  23. 2026-10-09 11:20 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  24. 2026-10-09 06:56 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  25. 2026-10-09 02:34 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
Show 22 more
  1. 2026-10-08 22:12 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  2. 2026-10-08 17:51 UTCEG score recompute
  3. 2026-10-08 17:51 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  4. 2026-10-08 17:10 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  5. 2026-10-08 13:17 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  6. 2026-10-08 08:47 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  7. 2026-10-08 04:25 UTCEG score recompute
  8. 2026-10-08 04:25 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  9. 2026-10-08 04:08 UTCEG score recompute
  10. 2026-10-08 04:08 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  11. 2026-10-08 03:16 UTCEG score recompute
  12. 2026-10-08 03:16 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  13. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  14. 2026-10-07 22:54 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  15. 2026-10-07 18:32 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  16. 2026-10-07 14:10 UTCEG score recompute
  17. 2026-10-07 14:10 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  18. 2026-10-07 13:17 UTCEG score recompute
  19. 2026-10-07 13:17 UTCGHSA enrichmentGHSA-6m95-66x2-x5hx · GitHub severity CRITICAL
  20. 2026-10-07 09:19 UTCEG score recompute
  21. 2026-10-07 08:57 UTCEG score recomputeFirst assessed: 9.4 CRITICAL
  22. 2026-10-07 08:56 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-64393?
CVE-2025-64393 is a critical-severity vulnerability; its CVE record was published on October 7, 2026. This vulnerability in Veeam Backup & Replication allows a Backup Viewer to execute arbitrary code as SYSTEM on the backup server.
When was the CVE record for CVE-2025-64393 published?
The CVE record for CVE-2025-64393 was published on October 7, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 8, 2026; the record at its source may have been updated since.
Is CVE-2025-64393 actively exploited?
CVE-2025-64393 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-64393?
CVE-2025-64393 has a CVSS base score of 9.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2025-64393?
No fix for CVE-2025-64393 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-2025-64393 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2025-64393

Explore →

Is Your Infrastructure Affected by CVE-2025-64393?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs