CVE-2025-58146

CRITICALPre-NVD 9.49.4
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (6th 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 — 3 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: 0.2%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.

There are multiple issues.

  • Updates to the XAPI database sanitise input strings, but try
generating the notification using the unsanitised input. This causes the database's event thread to terminate and cease further processing.
  • XAPI's UTF-8 encoder implements v3.0 of the Unicode spec, but XAPI
uses libraries which conform to the stricter v3.1 of the Unicode spec. This causes some strings to be accepted as valid UTF-8 by XAPI, but rejected by other libraries in use. Notably, such strings can be entered into the database, after which the database can no longer be loaded.
  • There is no input sanitisation for Map/Set updates on objects in the
XAPI database.

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.
Exploitation0.2% × 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
0.2%
EPSS %ILE
6th
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

July 9, 2026

Last Modified

September 29, 2026

Advisory Details (3)

Auto-updated Oct 2, 2026
No fix on record yet.
Web page

XSA-474 - Xen Security Advisories

http://xenbits.xen.org/xsa/advisory-474.html
Web page

oss-security - Xen Security Advisory 474 v2 (CVE-2025-58146) - XAPI UTF-8 string handling

http://www.openwall.com/lists/oss-security/2025/09/09/3
Web page

XSA-474 - Xen Security Advisories

https://xenbits.xen.org/xsa/advisory-474.html

Vendor Advisories for CVE-2025-58146(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 15× 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.

Showing the most recent 96 of 395 refreshes on record for this CVE.

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. 4 repeat rows among the latest 100 are merged into the row they repeat. The 299 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 03:19 UTCEG score recompute
  2. 2026-10-14 03:18 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  3. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  4. 2026-10-12 23:19 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  5. 2026-10-12 16:54 UTCEG score recompute
  6. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  7. 2026-10-12 10:38 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  8. 2026-10-11 20:28 UTCEG score recompute
  9. 2026-10-11 18:40 UTCEG score recompute
  10. 2026-10-11 15:15 UTCEG score recompute
  11. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  12. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  13. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  14. 2026-10-08 17:10 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  15. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  16. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  17. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  18. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  19. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  20. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  21. 2026-10-01 16:03 UTCEG score recompute
  22. 2026-10-01 16:03 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  23. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  24. 2026-09-29 19:25 UTCEG score recompute
  25. 2026-09-29 19:25 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
Show 71 more
  1. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  2. 2026-09-28 10:29 UTCEG score recompute
  3. 2026-09-28 10:29 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  4. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  5. 2026-09-26 00:25 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  6. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  7. 2026-09-24 11:26 UTCEG score recompute
  8. 2026-09-24 11:26 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  9. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  10. 2026-09-23 10:06 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  11. 2026-09-23 05:56 UTCEG score recompute
  12. 2026-09-23 05:56 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  13. 2026-09-21 21:06 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  14. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  15. 2026-09-19 15:42 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  16. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  17. 2026-09-18 10:09 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  18. 2026-09-18 05:36 UTCEG score recompute
  19. 2026-09-18 05:36 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  20. 2026-09-17 19:29 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  21. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  22. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  23. 2026-09-14 08:05 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  24. 2026-09-14 03:55 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  25. 2026-09-13 23:46 UTCEG score recompute
  26. 2026-09-13 23:46 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  27. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  28. 2026-09-13 16:43 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  29. 2026-09-13 12:28 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  30. 2026-09-13 08:19 UTCEG score recompute
  31. 2026-09-13 08:19 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  32. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  33. 2026-09-12 13:34 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  34. 2026-09-12 03:24 UTCEG score recompute
  35. 2026-09-12 03:24 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  36. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  37. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  38. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  39. 2026-09-08 21:59 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  40. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  41. 2026-09-06 13:59 UTCEG score recompute
  42. 2026-09-06 13:59 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  43. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  44. 2026-09-06 02:45 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  45. 2026-09-05 22:35 UTCEG score recompute
  46. 2026-09-05 22:35 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  47. 2026-09-05 15:28 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  48. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  49. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  50. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  51. 2026-09-01 04:38 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  52. 2026-08-31 01:00 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  53. 2026-08-30 20:51 UTCEG score recompute
  54. 2026-08-30 20:51 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  55. 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  56. 2026-08-30 16:42 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  57. 2026-08-30 11:13 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  58. 2026-08-30 06:47 UTCEG score recompute
  59. 2026-08-30 06:46 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  60. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  61. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  62. 2026-08-28 02:42 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  63. 2026-08-27 21:45 UTCEG score recompute
  64. 2026-08-27 21:45 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  65. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  66. 2026-08-27 01:09 UTCEG score recompute
  67. 2026-08-27 01:09 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  68. 2026-08-26 14:45 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  69. 2026-08-26 12:55 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  70. 2026-08-26 08:19 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL
  71. 2026-08-26 03:52 UTCGHSA enrichmentGHSA-cfmg-797f-j883 · GitHub severity CRITICAL

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Frequently asked(5)

What is CVE-2025-58146?
CVE-2025-58146 is a critical-severity vulnerability; its CVE record was published on July 9, 2026. There are multiple issues. 1. Updates to the XAPI database sanitise input strings, but try generating the notification using the unsanitised input. This causes the database's event thread to terminate and cease further processing. 2. XAPI's UTF-8 encoder implements v3.0 of the Unicode spec, but…
When was CVE-2025-58146 made public?
CVE-2025-58146 was made public on September 9, 2025: that is the date its CVE record's CNA, Xen Project, gives for when the vulnerability was made public. The CVE record itself was published on July 9, 2026. EchelonGraph's copy of the record carries a last-modified date of September 29, 2026; the record at its source may have been updated since.
Is CVE-2025-58146 actively exploited?
CVE-2025-58146 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (6th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-58146?
CVE-2025-58146 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-2025-58146?
No fix for CVE-2025-58146 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-2025-58146 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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