Threats / Microsoft / CVE-2024-38080
CVE-2024-38080
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-04
Microsoft Windows vulnerability
Microsoft Windows Hyper-V privilege escalation vulnerability (CWE-190) allows local users to gain SYSTEM privileges. Actively exploited in the wild.
Verdict
Today item — known-exploited.
A local privilege escalation in Windows Hyper-V enables attackers with user-level access to obtain SYSTEM-level control. Active exploitation demonstrates immediate risk to Windows environments running Hyper-V.
CISA KEV Yes · 2024-07-095EPSS 0.07115 (verify live)6Exploit Public PoC7CVSS 7.83CISA SSVC Exploitation: active · Automatable: no · Impact: total4
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Public proof-of-concept exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
7 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-07-09).
Probability (EPSS)
EPSS 0.07115 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C) · Affected: Microsoft, Windows . Confirm exact fixed builds in the vendor advisory.CVSS — CNA-assigned (CVE.org), version 3.1, set at disclosure.
Weakness (CWE)
Mapped to CWE-190 Integer Overflow — weakness family: Memory safety.CWE — CNA-assigned (CVE.org); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: no · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog the same day the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I gain initial access as a standard user on a Windows system with Hyper-V enabled.
Business
Attacker establishes foothold within the organization's virtualization infrastructure with minimal initial privileges.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I exploit the integer overflow vulnerability in Hyper-V to escalate my privileges to SYSTEM level.
Business
Attacker obtains highest operating system privileges, enabling full system compromise and lateral movement.
3
Lateral reach — past segmentation narrative 3
Attacker
I use SYSTEM privileges to install persistence mechanisms, modify security controls, and access sensitive data.
Business
Organization loses control of affected systems; attacker gains ability to exfiltrate data, deploy malware, or sabotage infrastructure.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05