CVE-2026-47304

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 88% 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, nvd
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

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
9.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

July 14, 2026

Last Modified

July 27, 2026

Advisory Details (1)

Auto-updated Jul 27, 2026
Patch available. Sources: microsoft.
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-2026-47304

Vendor Advisories for CVE-2026-47304(13)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(12)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntudotnet10 (10.0.110-10.0.10-0ubuntu1~26.04.1) @ resolute2026-07-27ubuntu
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
redhatdotnet9.0-0:9.0.119-1.el9_82026-07-20redhat
redhatdotnet10.0-0:10.0.110-1.el9_82026-07-20redhat
redhatdotnet8-0-main-8.0.129-2.1.hum12026-07-20redhat
redhatdotnet8.0-0:8.0.129-1.el10_22026-07-20redhat
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-main-9.0.119-1.hum12026-07-15redhat

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

(1 across 1 ecosystem)
NuGet(1)
PackageVulnerable rangeFixed inDependents
System.Security.Cryptography.Xml8.0.0, 8.0.1, 8.0.2, 8.0.38.0.4—

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 24× in last 7d / 38× 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.

  1. 2026-07-27 16:19 UTCVendor advisory
  2. 2026-07-27 15:26 UTCEG score recompute
  3. 2026-07-27 15:26 UTCVendor advisory
  4. 2026-07-27 11:47 UTCVendor advisory
  5. 2026-07-27 08:08 UTCVendor advisory
  6. 2026-07-27 04:29 UTCVendor advisory
  7. 2026-07-27 00:41 UTCVendor advisory
  8. 2026-07-26 21:00 UTCVendor advisory
  9. 2026-07-26 17:21 UTCVendor advisory
  10. 2026-07-26 15:23 UTCEG score recompute
  11. 2026-07-26 15:23 UTCVendor advisory
  12. 2026-07-26 14:54 UTCEPSS rescore
  13. 2026-07-26 11:43 UTCEG score recompute
  14. 2026-07-26 11:43 UTCVendor advisory
  15. 2026-07-26 04:40 UTCEG score recompute▲ 1.70
  16. 2026-07-26 04:40 UTCVendor advisory
  17. 2026-07-25 14:18 UTCEPSS rescore
  18. 2026-07-24 14:18 UTCEPSS rescore
  19. 2026-07-24 14:12 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  20. 2026-07-23 14:18 UTCEPSS rescore
  21. 2026-07-23 03:17 UTCEG score recompute
  22. 2026-07-22 14:08 UTCEPSS rescore
  23. 2026-07-21 15:24 UTCEPSS rescore
  24. 2026-07-20 17:08 UTCEPSS rescore
  25. 2026-07-19 14:31 UTCEPSS rescore
Show 13 more
  1. 2026-07-19 02:40 UTCEG score recompute
  2. 2026-07-19 02:40 UTCVendor advisory
  3. 2026-07-19 02:29 UTCEPSS rescore
  4. 2026-07-18 10:04 UTCEPSS rescore
  5. 2026-07-16 22:39 UTCVendor advisory
  6. 2026-07-16 17:03 UTCEPSS rescore
  7. 2026-07-16 09:46 UTCVendor advisory
  8. 2026-07-15 20:52 UTCVendor advisory
  9. 2026-07-15 16:57 UTCEPSS rescore
  10. 2026-07-15 07:56 UTCVendor advisory
  11. 2026-07-14 19:02 UTCEG score recompute
  12. 2026-07-14 19:02 UTCVendor advisory
  13. 2026-07-14 19:00 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-47304?
CVE-2026-47304 is a critical vulnerability 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 disclosed?
CVE-2026-47304 was first published in the National Vulnerability Database on July 14, 2026, with the most recent update on July 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47304 actively exploited?
CVE-2026-47304 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 87.9% of all 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?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47304, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-47304

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