Summary Microsoft was notified that an elevation of privilege vulnerability exists in Windows Update, potentially enabling an attacker with basic user privileges to reintroduce previously mitigated vulnerabilities or circumvent some features of Virtualization Based Security (VBS). However, an attacker attempting to exploit this vulnerability requires additional interaction by a privileged user to be successful. Microsoft has developed a security update to mitigate this threat which was made available October 08, 2024 and is provided in the Security Updates table of this CVE for customers to download. Note: Depending on your version of Windows, additional steps may be required to update Windows Recovery Environment (WinRE) to be protected from this vulnerability. Please refer to the FAQ section for more information. Guidance for customers who cannot immediately implement the update is provided in the Recommended Actions section of this CVE to help reduce the risks associated with this vulnerability and to protect their systems. If there are any further updates regarding mitigations for this vulnerability, this CVE will be updated and customers will be notified. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert if an update occurs. Details A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows Update potentially enabling an attacker with basic user privileges to reintroduce previously mitigated vulnerabilities or circumvent some features of VBS. For exploitation to succeed, an attacker must trick or convince an Administrator or a user with delegated permissions into performing a system restore which inadvertently triggers the vulnerability. Microsoft has developed a security update to mitigate this threat which was made available October 08, 2024 and is provided in the Security Updates table of this CVE for customers to download. Note: Depending on your version of Windows, additional steps may be required to update Windows Recovery Environment (WinRE) to be protected from this vulnerability. Please refer to the FAQ section for more information. Guidance for customers who cannot immediately implement the update is provided in the Recommended Actions section of this CVE to help reduce the risks associated with this vulnerability and to protect their systems. If there are any further... See more at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38202
CVE-2024-38202
“—” beside the score: it is equal to NVD's CVSS score.
Score 7.3 from GitHub Security Advisory (severity: HIGH) published 2024-08-08. NVD baseline CVSS 7.3; sources differ by 0.0.
Also known asEUVD-2024-37170 (ENISA EUVD) · GHSA-gw56-mg6j-26qj (GitHub Security Advisories)Source: ENISA EUVD
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.3
- EG Score
- 7.3HIGHmedium confidence
- EG Risk
- 34EG Risk 34/100
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)Severity73% × 45%Impact severity (EG Severity): CVSS 7.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation1.7% × 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
- 1.7%
- EPSS %ILE
- 76th
- 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 (7.3): severity, escalated by confirmed exploitation. This CVE's 7.3 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.3 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 1.7% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). 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
August 8, 2024
Last Modified
April 16, 2025
References (3)
- secure@microsofthttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38202Patch · Vendor Advisory
- CVE Programhttps://www.vicarius.io/vsociety/posts/cve-2024-38202-potential-elevation-of-privilege-vulnerability-in-windows-backup-detection-script
- CVE Programhttps://www.vicarius.io/vsociety/posts/cve-2024-38202-potential-elevation-of-privilege-vulnerability-in-windows-backup-mitigation-script
Vendor Advisories for CVE-2024-38202(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 8× in last 7d / 38× 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 209 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 113 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-31 16:30 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-30 16:32 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-29 16:30 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-28 16:29 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-27 20:30 UTCEG score recompute
- 2026-10-27 20:30 UTCGHSA enrichmentGHSA-gw56-mg6j-26qj · GitHub severity HIGH · GitHub CVSS 7.3
- 2026-10-27 16:29 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-26 16:29 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-25 17:07 UTCEG score recompute
- 2026-10-25 16:30 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-24 16:30 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-23 16:29 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-22 16:31 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-21 16:29 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-20 19:41 UTCEG score recompute
- 2026-10-20 19:41 UTCVendor advisory
- 2026-10-20 19:41 UTCGHSA enrichmentGHSA-gw56-mg6j-26qj · GitHub severity HIGH · GitHub CVSS 7.3
- 2026-10-20 16:30 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-19 16:29 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-18 16:30 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-18 07:10 UTCEG score recompute
- 2026-10-17 16:31 UTCEPSS rescoreEPSS 1.7% · 76th percentile
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- 2026-10-15 16:30 UTCEPSS rescoreEPSS 1.7% · 76th percentile
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- 2026-10-13 16:30 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-12 17:50 UTCEG score recompute
- 2026-10-12 16:31 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-11 21:15 UTCEG score recompute
- 2026-10-11 16:08 UTCEG score recompute
- 2026-10-11 13:46 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-10 19:58 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-09 20:05 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-08 17:07 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-07 23:46 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-06 15:15 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-05 17:41 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-04 23:20 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-03 14:24 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-10-01 19:48 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-09-30 19:48 UTCEG score recompute
- 2026-09-30 15:01 UTCEPSS rescoreEPSS 1.7% · 76th percentile
- 2026-09-29 15:17 UTCEPSS rescoreEPSS 1.7% · 75th percentile
- 2026-09-28 13:49 UTCEPSS rescoreEPSS 1.7% · 75th percentile
- 2026-09-27 13:44 UTCEPSS rescoreEPSS 1.7% · 75th percentile
- 2026-09-26 15:57 UTCEPSS rescoreEPSS 1.7% · 75th percentile
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- 2026-09-19 15:40 UTCEPSS rescoreEPSS 1.7% · 75th percentile
- 2026-09-18 19:26 UTCEPSS rescoreEPSS 1.7% · 75th percentile
- 2026-09-16 14:06 UTCEPSS rescoreEPSS 1.7% · 75th percentile
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Frequently asked(5)
What is CVE-2024-38202?
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What is the CVSS score of CVE-2024-38202?
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Dependency Blast Radius
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