CVE-2026-32203

HIGHPre-NVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-28. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-22591 (ENISA EUVD) · GHSA-6588-8gv4-xfgh (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.0%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
50
EG Risk 50/100

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)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation1.9% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
2.0%
EPSS %ILE
80th
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 (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
2.0% within 30 daysSource: FIRST EPSS. 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; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days 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; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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

April 14, 2026

Last Modified

October 26, 2026

Advisory Details (1)

Auto-updated May 6, 2026
Patch available. Sources: microsoft.
MicrosoftMentions a patch (unverified)

Security Update Guide - Microsoft Security Response Center

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32203

Patch Availability(22)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntunetstandard-targeting-pack-2.1-9.0 (9.0.116-0ubuntu1~25.10.1) @ questing2026-11-02ubuntu
ubuntudotnet10 (10.0.107-10.0.7-0ubuntu1~26.04.1) @ resolute2026-11-02ubuntu
redhatdotnet8.0-0:8.0.126-1.el9_42026-05-05redhat
redhatdotnet8.0-0:8.0.126-1.el10_02026-05-04redhat
redhatdotnet8.0-0:8.0.126-1.el9_62026-05-04redhat
redhatdotnet9.0-0:9.0.116-1.el9_62026-05-04redhat
redhatdotnet9.0-0:9.0.116-1.el10_02026-05-04redhat
redhatdotnet9-0-main-9.0.116-1.hum12026-04-21redhat
redhatdotnet8-0-main-8.0.126-1.hum12026-04-20redhat
redhatdotnet10-0-main-10.0.106-1.hum12026-04-20redhat
redhatdotnet8.0-0:8.0.126-1.el8_102026-04-16redhat
redhatdotnet9.0-0:9.0.116-1.el9_72026-04-16redhat
redhatdotnet8.0-0:8.0.126-1.el10_12026-04-16redhat
redhatdotnet8.0-0:8.0.126-1.el9_72026-04-16redhat
redhatdotnet10.0-0:10.0.106-1.el9_72026-04-16redhat
redhatdotnet10.0-0:10.0.106-1.el8_102026-04-16redhat
redhatdotnet9.0-0:9.0.116-1.el10_12026-04-16redhat
redhatdotnet10.0-0:10.0.106-1.el10_12026-04-16redhat
redhatdotnet9.0-0:9.0.116-1.el8_102026-04-16redhat
nugetSystem.Security.Cryptography.Xml @ 10.0.6 (fixes >= 10.0.0, <= 10.0.5)—ghsa
nugetSystem.Security.Cryptography.Xml @ 9.0.15 (fixes >= 9.0.0, <= 9.0.14)—ghsa
nugetSystem.Security.Cryptography.Xml @ 8.0.3 (fixes >= 8.0.0, <= 8.0.2)—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

(1 across 1 ecosystem)
NuGet(1)
PackageVulnerable rangeFix by version rangeDependents
System.Security.Cryptography.Xml8.0.0, 8.0.1, 8.0.2
  • 10.0.0 up to 10.0.6: fixed in 10.0.6
  • 9.0.0 up to 9.0.15: fixed in 9.0.15
  • 8.0.0 up to 8.0.3: fixed in 8.0.3
—

Weakness Classification(3)

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

Additional Vendor Advisories

(7)

Data Freshness Timeline

(refreshed 9× in last 7d / 39× 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 279 rows on record for this CVE, as 96 entries (4 repeats merged).

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 179 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 2.0% · 80th percentile
  2. 2026-11-12 16:33 UTCEPSS rescoreEPSS 2.0% · 80th percentile
  3. 2026-11-11 16:39 UTCEPSS rescoreEPSS 2.0% · 80th percentile
  4. 2026-11-10 16:43 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  5. 2026-11-09 16:35 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  6. 2026-11-09 07:18 UTCEchelonGraph re-scored
  7. 2026-11-09 07:18 UTCVendor advisory
  8. 2026-11-09 07:18 UTCGHSA enrichmentGHSA-6588-8gv4-xfgh · GitHub severity HIGH · GitHub CVSS 7.5
  9. 2026-11-08 16:39 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  10. 2026-11-07 16:38 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  11. 2026-11-06 16:37 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  12. 2026-11-05 16:37 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  13. 2026-11-04 16:35 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  14. 2026-11-03 16:47 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  15. 2026-11-02 16:44 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  16. 2026-11-02 14:24 UTCEchelonGraph re-scored
  17. 2026-11-02 14:24 UTCVendor advisory
  18. 2026-11-02 14:24 UTCGHSA enrichmentGHSA-6588-8gv4-xfgh · GitHub severity HIGH · GitHub CVSS 7.5
  19. 2026-11-01 16:34 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  20. 2026-11-01 07:54 UTCGHSA enrichmentGHSA-6588-8gv4-xfgh · GitHub severity HIGH · GitHub CVSS 7.5
  21. 2026-11-01 07:54 UTCEchelonGraph re-scored
  22. 2026-10-31 16:32 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  23. 2026-10-30 16:34 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  24. 2026-10-29 16:33 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  25. 2026-10-28 16:32 UTCEPSS rescoreEPSS 1.9% · 79th percentile
Show 71 more
  1. 2026-10-27 16:31 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  2. 2026-10-26 21:31 UTCEchelonGraph re-scored
  3. 2026-10-26 21:31 UTCVendor advisory
  4. 2026-10-26 16:31 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  5. 2026-10-25 16:32 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  6. 2026-10-25 14:36 UTCEchelonGraph re-scored
  7. 2026-10-24 16:32 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  8. 2026-10-23 16:31 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  9. 2026-10-22 16:34 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  10. 2026-10-22 08:59 UTCEchelonGraph re-scored
  11. 2026-10-22 08:59 UTCVendor advisory
  12. 2026-10-21 16:32 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  13. 2026-10-20 16:33 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  14. 2026-10-19 16:31 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  15. 2026-10-18 16:31 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  16. 2026-10-18 03:48 UTCEchelonGraph re-scored
  17. 2026-10-17 16:34 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  18. 2026-10-16 16:41 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  19. 2026-10-15 16:32 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  20. 2026-10-15 16:05 UTCVendor advisory
  21. 2026-10-14 23:21 UTCEchelonGraph re-scored
  22. 2026-10-14 23:21 UTCVendor advisory
  23. 2026-10-14 16:32 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  24. 2026-10-13 16:34 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  25. 2026-10-12 16:34 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  26. 2026-10-12 16:14 UTCEchelonGraph re-scored
  27. 2026-10-11 19:56 UTCEchelonGraph re-scored
  28. 2026-10-11 17:10 UTCEchelonGraph re-scored
  29. 2026-10-11 14:38 UTCEchelonGraph re-scored
  30. 2026-10-11 13:48 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  31. 2026-10-10 20:00 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  32. 2026-10-09 20:07 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  33. 2026-10-08 17:12 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  34. 2026-10-07 23:47 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  35. 2026-10-06 15:17 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  36. 2026-10-05 17:42 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  37. 2026-10-04 23:22 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  38. 2026-10-03 14:25 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  39. 2026-10-01 19:49 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  40. 2026-09-30 15:03 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  41. 2026-09-28 13:51 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  42. 2026-09-27 13:48 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  43. 2026-09-26 15:58 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  44. 2026-09-26 00:26 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  45. 2026-09-25 17:48 UTCEchelonGraph re-scored
  46. 2026-09-25 17:48 UTCVendor advisory
  47. 2026-09-20 20:15 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  48. 2026-09-18 19:27 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  49. 2026-09-17 19:30 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  50. 2026-09-16 14:08 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  51. 2026-09-16 05:15 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  52. 2026-09-12 15:01 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  53. 2026-09-11 14:52 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  54. 2026-09-10 09:34 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  55. 2026-09-08 22:00 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  56. 2026-09-07 16:01 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  57. 2026-09-06 13:47 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  58. 2026-09-04 05:06 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  59. 2026-09-02 14:11 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  60. 2026-09-01 13:53 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  61. 2026-09-01 04:39 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  62. 2026-08-30 19:17 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  63. 2026-08-30 01:22 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  64. 2026-08-28 21:41 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  65. 2026-08-27 14:25 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  66. 2026-08-26 14:46 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  67. 2026-08-25 13:49 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  68. 2026-08-24 14:17 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  69. 2026-08-23 00:19 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  70. 2026-08-21 23:49 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  71. 2026-08-20 22:55 UTCEPSS rescoreEPSS 1.9% · 77th percentile

Frequently asked(5)

What is CVE-2026-32203?
CVE-2026-32203 is a high-severity vulnerability; its CVE record was published on April 14, 2026. Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.
When was CVE-2026-32203 made public?
CVE-2026-32203 was made public on April 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 April 14, 2026. EchelonGraph's copy of the record carries a last-modified date of October 26, 2026; the record at its source may have been updated since.
Is CVE-2026-32203 actively exploited?
CVE-2026-32203 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.0% probability of exploitation in the next 30 days (80th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-32203?
CVE-2026-32203 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-32203?
A fix for CVE-2026-32203 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-32203 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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