Windows CSC Service Elevation of Privilege Vulnerability
CVE-2024-26229
“—” beside the score: it is equal to NVD's CVSS score.
Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2024-04-09. NVD baseline CVSS 7.8; sources differ by 0.0.
Also known asEUVD-2024-23505 (ENISA EUVD) · GHSA-m3pg-c9mv-657r (GitHub Security Advisories)Source: ENISA EUVD
- Public exploit or proof-of-concept code is available
A fix is available — apply it.
- CVSS v3
- 7.8
- EG Score
- 7.8HIGHmedium confidence
- EG Risk
- 51EG Risk 51/100
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.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.Exploitation public PoC (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 at low or medium mission impact and sooner than that at high. - EPSS PROB
- 9.4%
- EPSS %ILE
- 95th
- 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.GitHub Security Advisory CVSS
- EG Likelihood
- 9.4% 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, Track* at medium and Attend at high mission impact.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, Track* at medium and Attend at high mission impact.
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation public PoC (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
April 9, 2024
Last Modified
January 8, 2025
Advisory Details (1)
Auto-updated Sep 27, 2026Security Update Guide - Microsoft Security Response Center
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-26229Vendor Advisories for CVE-2024-26229(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 / 41× 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 97 of 179 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. 3 repeat rows among the latest 100 are merged into the row they repeat. The 82 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 16:31 UTCEPSS rescoreEPSS 9.4% · 95th percentile
- 2026-10-31 16:30 UTCEPSS rescoreEPSS 9.4% · 95th percentile
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- 2026-10-28 16:29 UTCEPSS rescoreEPSS 9.4% · 95th percentile
- 2026-10-27 19:27 UTCEG score recompute
- 2026-10-27 19:27 UTCGHSA enrichmentGHSA-m3pg-c9mv-657r · GitHub severity HIGH · GitHub CVSS 7.8
- 2026-10-27 16:29 UTCEPSS rescoreEPSS 9.4% · 95th percentile
- 2026-10-26 16:29 UTCEPSS rescoreEPSS 9.4% · 95th percentile
- 2026-10-25 17:16 UTCEG score recompute
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- 2026-10-21 16:29 UTCEPSS rescoreEPSS 9.4% · 95th percentile
- 2026-10-20 20:21 UTCEG score recompute
- 2026-10-20 20:21 UTCVendor advisory
- 2026-10-20 20:21 UTCGHSA enrichmentGHSA-m3pg-c9mv-657r · GitHub severity HIGH · GitHub CVSS 7.8
- 2026-10-20 16:30 UTCEPSS rescoreEPSS 9.4% · 95th percentile
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- 2026-10-18 16:29 UTCEPSS rescoreEPSS 9.4% · 95th percentile
- 2026-10-18 07:23 UTCEG score recompute
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- 2026-10-14 16:30 UTCEPSS rescoreEPSS 9.4% · 95th percentile
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- 2026-10-12 16:31 UTCEPSS rescoreEPSS 9.4% · 95th percentile
- 2026-10-12 14:41 UTCEG score recompute
- 2026-10-12 14:41 UTCVendor advisory
- 2026-10-12 14:41 UTCGHSA enrichmentGHSA-m3pg-c9mv-657r · GitHub severity HIGH · GitHub CVSS 7.8
- 2026-10-11 21:24 UTCEG score recompute
- 2026-10-11 16:18 UTCEG score recompute
- 2026-10-11 13:45 UTCEPSS rescoreEPSS 9.4% · 95th percentile
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- 2026-09-30 16:59 UTCEG score recompute
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Publicly available exploits
(4 references)Public exploit code is referenced for this CVE (4 GitHub PoCs). Defenders should treat patch urgency accordingly.
- GitHub PoCCracked5pider/eop24-26229Published Aug 4, 2024
A firebeam plugin that exploits the CVE-2024-26229 vulnerability to perform elevation of privilege from a unprivileged user
Open source ↗ - GitHub PoCteam-MineDEV/CVE-2024-26229Published Jun 16, 2024
Windows CSC服务特权提升漏洞。 当程序向缓冲区写入的数据超出其处理能力时,就会发生基于堆的缓冲区溢出,从而导致多余的数据溢出到相邻的内存区域。这种溢出会损坏内存,并可能使攻击者能够执行任意代码或未经授权访问系统。本质上,攻击者可以编写触发溢出的恶意代码或输入,从而控制受影响的系统、执行任意命令、安装恶意软件或访问敏感数据。 微软已发出警告成功利用此漏洞的攻击者可以获得 SYSTEM 权限,这是 Windows 系统上的最高访问级别。这增加了与 CVE-2024-26229 相关的风险,使其成为恶意行为者的主要目标。
Open source ↗ - GitHub PoCapkc/CVE-2024-26229-BOFPublished Jun 13, 2024
BOF implementations of CVE-2024-26229 for Cobalt Strike and BruteRatel
Open source ↗ - GitHub PoCRalfHacker/CVE-2024-26229-exploitPublished Jun 11, 2024
Windows LPE
Open source ↗
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2024-26229?
When was CVE-2024-26229 made public?
Is CVE-2024-26229 actively exploited?
What is the CVSS score of CVE-2024-26229?
How do I remediate CVE-2024-26229?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2024-26229
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