CVE-2026-50649

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.8 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 4.0% (90th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from the CNA's CVSS
Sources: the CNA's CVSS, EPSS
Trending — 3 sources updated this week

Also known asEUVD-2026-44399 (ENISA EUVD)Source: ENISA EUVD

7.8EG
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: 4.0%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
37
EG Risk 37/100

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)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation4.0% × 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
4.0%
EPSS %ILE
90th
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 (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.the CNA's CVSS · CVSS v3.0 or v3.1
EG Likelihood
4.0% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). 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 1, 2026

Advisory Details (1)

Auto-updated Jul 15, 2026
Patch available. Sources: microsoft.
MicrosoftMentions a patch (unverified)

Security Update Guide - Microsoft Security Response Center

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50649

Patch Availability(16)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatdotnet8.0-0:8.0.130-1.el9_42026-08-24redhat
redhatdotnet9.0-0:9.0.120-1.el9_62026-08-24redhat
redhatdotnet9.0-0:9.0.120-1.el10_02026-08-24redhat
redhatdotnet8.0-0:8.0.130-1.el10_02026-08-24redhat
redhatdotnet8.0-0:8.0.130-1.el9_62026-08-24redhat
redhatdotnet9.0-0:9.0.119-1.el8_102026-07-20redhat
redhatdotnet8.0-0:8.0.129-1.el8_102026-07-20redhat
redhatdotnet8.0-0:8.0.129-1.el9_82026-07-20redhat
redhatdotnet8-0-main-8.0.29-2.1.hum12026-07-20redhat
redhatdotnet10.0-0:10.0.110-1.el10_22026-07-20redhat
redhatdotnet10.0-0:10.0.110-1.el8_102026-07-20redhat
redhatdotnet9.0-0:9.0.119-1.el9_82026-07-20redhat
redhatdotnet10.0-0:10.0.110-1.el9_82026-07-20redhat
redhatdotnet8.0-0:8.0.129-1.el10_22026-07-20redhat
redhatdotnet9.0-0:9.0.119-1.el10_22026-07-20redhat
redhatdotnet9-0-main-9.0.118-1.hum12026-06-19redhat

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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 46× 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 100 of 273 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. None are among the latest 100 rows. The 173 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:46 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  2. 2026-11-01 17:44 UTCEG score recompute
  3. 2026-11-01 17:44 UTCVendor advisory
  4. 2026-10-31 16:33 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  5. 2026-10-30 16:34 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  6. 2026-10-29 16:33 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  7. 2026-10-28 20:27 UTCEG score recompute
  8. 2026-10-28 20:15 UTCEG score recompute
  9. 2026-10-28 20:15 UTCVendor advisory
  10. 2026-10-28 16:32 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  11. 2026-10-27 16:32 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  12. 2026-10-26 16:31 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  13. 2026-10-25 16:33 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  14. 2026-10-25 14:21 UTCEG score recompute
  15. 2026-10-24 18:42 UTCEG score recompute
  16. 2026-10-24 18:42 UTCVendor advisory
  17. 2026-10-24 16:33 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  18. 2026-10-23 16:32 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  19. 2026-10-22 16:34 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  20. 2026-10-21 16:33 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  21. 2026-10-20 16:33 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  22. 2026-10-19 16:32 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  23. 2026-10-18 16:32 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  24. 2026-10-18 03:33 UTCEG score recompute
  25. 2026-10-17 16:34 UTCEPSS rescoreEPSS 4.0% · 90th percentile
Show 75 more
  1. 2026-10-17 11:36 UTCEG score recompute
  2. 2026-10-17 11:36 UTCVendor advisory
  3. 2026-10-16 16:42 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  4. 2026-10-15 16:32 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  5. 2026-10-14 16:33 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  6. 2026-10-13 16:34 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  7. 2026-10-12 16:34 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  8. 2026-10-12 15:59 UTCEG score recompute
  9. 2026-10-11 19:42 UTCEG score recompute
  10. 2026-10-11 16:57 UTCEG score recompute
  11. 2026-10-11 14:20 UTCEG score recompute
  12. 2026-10-11 13:49 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  13. 2026-10-10 20:00 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  14. 2026-10-09 20:07 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  15. 2026-10-08 19:15 UTCEG score recompute
  16. 2026-10-08 19:15 UTCVendor advisory
  17. 2026-10-08 17:12 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  18. 2026-10-07 23:48 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  19. 2026-10-06 15:18 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  20. 2026-10-05 17:43 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  21. 2026-10-04 23:22 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  22. 2026-10-03 14:26 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  23. 2026-10-02 17:56 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  24. 2026-10-01 19:50 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  25. 2026-10-01 12:53 UTCEG score recompute
  26. 2026-10-01 12:53 UTCVendor advisory
  27. 2026-09-30 15:03 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  28. 2026-09-28 13:51 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  29. 2026-09-28 08:54 UTCEG score recompute
  30. 2026-09-28 08:54 UTCVendor advisory
  31. 2026-09-27 13:48 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  32. 2026-09-26 15:59 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  33. 2026-09-26 00:27 UTCEPSS rescoreEPSS 4.0% · 90th percentile
  34. 2026-09-25 18:40 UTCEG score recompute
  35. 2026-09-25 18:40 UTCVendor advisory
  36. 2026-09-24 09:01 UTCEG score recompute
  37. 2026-09-24 09:01 UTCVendor advisory
  38. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  39. 2026-09-23 03:29 UTCEG score recompute
  40. 2026-09-23 03:29 UTCVendor advisory
  41. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  42. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  43. 2026-09-18 11:06 UTCVendor advisory
  44. 2026-09-17 22:45 UTCEG score recompute
  45. 2026-09-17 22:45 UTCVendor advisory
  46. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  47. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  48. 2026-09-14 11:36 UTCVendor advisory
  49. 2026-09-13 23:16 UTCEG score recompute
  50. 2026-09-13 23:16 UTCVendor advisory
  51. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  52. 2026-09-13 07:39 UTCEG score recompute
  53. 2026-09-13 07:39 UTCVendor advisory
  54. 2026-09-12 13:12 UTCVendor advisory
  55. 2026-09-11 21:55 UTCEG score recompute
  56. 2026-09-11 21:55 UTCVendor advisory
  57. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  58. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  59. 2026-09-09 21:07 UTCVendor advisory
  60. 2026-09-08 22:41 UTCEG score recompute
  61. 2026-09-08 22:41 UTCVendor advisory
  62. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  63. 2026-09-08 21:06 UTCVendor advisory
  64. 2026-09-08 17:16 UTCVendor advisory
  65. 2026-09-08 01:11 UTCEG score recompute
  66. 2026-09-08 01:11 UTCVendor advisory
  67. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  68. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  69. 2026-09-06 13:32 UTCVendor advisory
  70. 2026-09-05 21:00 UTCEG score recompute
  71. 2026-09-05 21:00 UTCVendor advisory
  72. 2026-09-04 22:38 UTCEG score recompute
  73. 2026-09-04 22:38 UTCVendor advisory
  74. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  75. 2026-09-02 18:42 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-50649?
CVE-2026-50649 is a high-severity vulnerability; its CVE record was published on July 14, 2026. Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
When was CVE-2026-50649 made public?
CVE-2026-50649 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 1, 2026; the record at its source may have been updated since.
Is CVE-2026-50649 actively exploited?
CVE-2026-50649 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.0% probability of exploitation in the next 30 days (90th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-50649?
CVE-2026-50649 has a CVSS base score of 7.8 (the CNA's own assessment, by microsoft; NVD's own analysis pending).
How do I remediate CVE-2026-50649?
A fix for CVE-2026-50649 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-50649 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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