CVE-2026-47304

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.3% (21st percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 8.1 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-07-20) is not newer than that change (2026-11-10), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2026-44355 (ENISA EUVD) · GHSA-g8r8-53c2-pm3f (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
44
EG Risk 44/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.3% × 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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
21st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

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.

The score's inputs: 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 14, 2026

Last Modified

November 10, 2026

Advisory Details (1)

Auto-updated Nov 8, 2026
Patch available. Sources: microsoft.
Microsoft

Security Update Guide - Microsoft Security Response Center

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47304

Patch Availability(20)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntudotnet10 (10.0.110-10.0.10-0ubuntu1~26.04.1) @ resolute2026-11-11ubuntu
redhatdotnet8.0-0:8.0.130-1.el9_62026-08-24redhat
redhatdotnet8.0-0:8.0.130-1.el10_02026-08-24redhat
redhatdotnet9.0-0:9.0.120-1.el9_62026-08-24redhat
redhatdotnet8.0-0:8.0.130-1.el9_42026-08-24redhat
redhatdotnet9.0-0:9.0.120-1.el10_02026-08-24redhat
redhatdotnet9.0-0:9.0.119-1.el10_22026-07-20redhat
redhatdotnet10.0-0:10.0.110-1.el10_22026-07-20redhat
redhatdotnet9.0-0:9.0.119-1.el8_102026-07-20redhat
redhatdotnet9.0-0:9.0.119-1.el9_82026-07-20redhat
redhatdotnet8.0-0:8.0.129-1.el10_22026-07-20redhat
redhatdotnet8-0-main-8.0.29-2.1.hum12026-07-20redhat
redhatdotnet10.0-0:10.0.110-1.el9_82026-07-20redhat
redhatdotnet8.0-0:8.0.129-1.el8_102026-07-20redhat
redhatdotnet10.0-0:10.0.110-1.el8_102026-07-20redhat
redhatdotnet8.0-0:8.0.129-1.el9_82026-07-20redhat
redhatdotnet9-0-main-9.0.119-1.hum12026-07-15redhat
nugetSystem.Security.Cryptography.Xml @ 10.0.10 (fixes >= 10.0.0, <= 10.0.9)—ghsa
nugetSystem.Security.Cryptography.Xml @ 9.0.18 (fixes >= 9.0.0, <= 9.0.17)—ghsa
nugetSystem.Security.Cryptography.Xml @ 8.0.4 (fixes >= 8.0.0, <= 8.0.3)—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(9 across 4 ecosystems)
Alpine:v3.23(3)
PackageVulnerable rangeFix by version rangeDependents
dotnet10-runtime—
  • every version up to 10.0.10-r0: fixed in 10.0.10-r0
—
dotnet8-runtime—
  • every version up to 8.0.29-r0: fixed in 8.0.29-r0
—
dotnet9-runtime—
  • every version up to 9.0.18-r0: fixed in 9.0.18-r0
—
Alpine:v3.24(3)
PackageVulnerable rangeFix by version rangeDependents
dotnet10-runtime—
  • every version up to 10.0.10-r0: fixed in 10.0.10-r0
—
dotnet8-runtime—
  • every version up to 8.0.29-r0: fixed in 8.0.29-r0
—
dotnet9-runtime—
  • every version up to 9.0.18-r0: fixed in 9.0.18-r0
—
Alpine:v3.22(2)
PackageVulnerable rangeFix by version rangeDependents
dotnet8-runtime—
  • every version up to 8.0.29-r0: fixed in 8.0.29-r0
—
dotnet9-runtime—
  • every version up to 9.0.18-r0: fixed in 9.0.18-r0
—
NuGet(1)
PackageVulnerable rangeFix by version rangeDependents
System.Security.Cryptography.Xml8.0.0, 8.0.1, 8.0.2, 8.0.3
  • 10.0.0 up to 10.0.10: fixed in 10.0.10
  • 9.0.0 up to 9.0.18: fixed in 9.0.18
  • 8.0.0 up to 8.0.4: fixed in 8.0.4
—

Weakness Classification(2)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 23× in last 7d / 80× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 521 rows 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. None are among the latest 100 rows. The 421 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:52 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  2. 2026-11-12 20:19 UTCEchelonGraph re-scored
  3. 2026-11-12 20:19 UTCVendor advisory
  4. 2026-11-12 20:19 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  5. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  6. 2026-11-11 21:53 UTCEchelonGraph re-scored
  7. 2026-11-11 21:53 UTCVendor advisory
  8. 2026-11-11 21:53 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  9. 2026-11-11 16:39 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  10. 2026-11-10 23:28 UTCVendor advisory
  11. 2026-11-10 23:28 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  12. 2026-11-10 22:45 UTCEchelonGraph re-scored
  13. 2026-11-10 22:45 UTCVendor advisory
  14. 2026-11-10 22:45 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  15. 2026-11-10 16:44 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  16. 2026-11-10 03:57 UTCEchelonGraph re-scored
  17. 2026-11-10 03:57 UTCVendor advisory
  18. 2026-11-10 03:57 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  19. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  20. 2026-11-09 05:31 UTCEchelonGraph re-scored
  21. 2026-11-09 05:31 UTCVendor advisory
  22. 2026-11-09 05:31 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  23. 2026-11-08 16:39 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  24. 2026-11-08 07:05 UTCEchelonGraph re-scored
  25. 2026-11-08 07:05 UTCVendor advisory
Show 75 more
  1. 2026-11-08 07:05 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  2. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  3. 2026-11-07 08:37 UTCEchelonGraph re-scored
  4. 2026-11-07 08:37 UTCVendor advisory
  5. 2026-11-07 08:37 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  6. 2026-11-06 16:38 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  7. 2026-11-06 10:12 UTCEchelonGraph re-scored
  8. 2026-11-06 10:12 UTCVendor advisory
  9. 2026-11-06 10:12 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  10. 2026-11-05 16:37 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  11. 2026-11-05 11:41 UTCEchelonGraph re-scored
  12. 2026-11-05 11:41 UTCVendor advisory
  13. 2026-11-05 11:41 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  14. 2026-11-04 16:35 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  15. 2026-11-04 13:15 UTCEchelonGraph re-scored
  16. 2026-11-04 13:15 UTCVendor advisory
  17. 2026-11-04 13:15 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  18. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  19. 2026-11-03 14:48 UTCEchelonGraph re-scored
  20. 2026-11-03 14:48 UTCVendor advisory
  21. 2026-11-03 14:48 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  22. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  23. 2026-11-02 16:09 UTCVendor advisory
  24. 2026-11-02 16:09 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  25. 2026-11-01 17:38 UTCEchelonGraph re-scored
  26. 2026-11-01 17:38 UTCVendor advisory
  27. 2026-11-01 17:38 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  28. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  29. 2026-11-01 14:09 UTCVendor advisory
  30. 2026-11-01 14:09 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  31. 2026-11-01 07:47 UTCGHSA enrichmentGHSA-g8r8-53c2-pm3f · GitHub severity HIGH · GitHub CVSS 8.1
  32. 2026-11-01 07:47 UTCEchelonGraph re-scored
  33. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  34. 2026-10-31 15:43 UTCVendor advisory
  35. 2026-10-30 17:17 UTCEchelonGraph re-scored
  36. 2026-10-30 17:17 UTCVendor advisory
  37. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  38. 2026-10-29 18:52 UTCEchelonGraph re-scored
  39. 2026-10-29 18:52 UTCVendor advisory
  40. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  41. 2026-10-28 20:27 UTCVendor advisory
  42. 2026-10-28 20:07 UTCEchelonGraph re-scored
  43. 2026-10-28 20:07 UTCVendor advisory
  44. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  45. 2026-10-27 21:41 UTCEchelonGraph re-scored
  46. 2026-10-27 21:41 UTCVendor advisory
  47. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  48. 2026-10-26 23:11 UTCEchelonGraph re-scored
  49. 2026-10-26 23:11 UTCVendor advisory
  50. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  51. 2026-10-25 21:21 UTCEchelonGraph re-scored
  52. 2026-10-25 21:21 UTCVendor advisory
  53. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  54. 2026-10-25 14:24 UTCEchelonGraph re-scored
  55. 2026-10-24 22:53 UTCEchelonGraph re-scored
  56. 2026-10-24 22:53 UTCVendor advisory
  57. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  58. 2026-10-24 00:28 UTCEchelonGraph re-scored
  59. 2026-10-24 00:28 UTCVendor advisory
  60. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  61. 2026-10-23 02:01 UTCEchelonGraph re-scored
  62. 2026-10-23 02:01 UTCVendor advisory
  63. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  64. 2026-10-22 03:34 UTCEchelonGraph re-scored
  65. 2026-10-22 03:34 UTCVendor advisory
  66. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  67. 2026-10-21 05:08 UTCEchelonGraph re-scored
  68. 2026-10-21 05:08 UTCVendor advisory
  69. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  70. 2026-10-20 06:43 UTCEchelonGraph re-scored
  71. 2026-10-20 06:43 UTCVendor advisory
  72. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  73. 2026-10-19 08:15 UTCEchelonGraph re-scored
  74. 2026-10-19 08:15 UTCVendor advisory
  75. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.3% · 19th percentile

Frequently asked(5)

What is CVE-2026-47304?
CVE-2026-47304 is a critical-severity vulnerability; its CVE record was published on July 14, 2026. Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.
When was CVE-2026-47304 made public?
CVE-2026-47304 was made public on July 14, 2026: that is the date its CVE record's CNA, Microsoft Corporation, gives for when the vulnerability was made public. The CVE record itself was published on July 14, 2026. EchelonGraph's copy of the record carries a last-modified date of November 10, 2026; the record at its source may have been updated since.
Is CVE-2026-47304 actively exploited?
CVE-2026-47304 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (21st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-47304?
CVE-2026-47304 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-47304?
A fix for CVE-2026-47304 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-47304 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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