CVE-2026-33825
Published Apr 14, 2026
Last updated a month ago
- Description
- Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.
- Source
- secure@microsoft.com
- NVD status
- Analyzed
- Products
- defender_antimalware_platform
CVSS 3.1
- Type
- Secondary
- Base score
- 7.8
- Impact score
- 5.9
- Exploitability score
- 1.8
- Vector string
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
Data from CISA
- Vulnerability name
- Microsoft Defender Insufficient Granularity of Access Control Vulnerability
- Exploit added on
- Apr 22, 2026
- Exploit action due
- May 6, 2026
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- secure@microsoft.com
- CWE-1220
- Hype score
- Not currently trending
TRC analysis shows Qilin ransomware group chained CVE-2026-50751 (Check Point VPN bypass) with CVE-2026-33825 (Microsoft Defender privilege escalation) for network-wide compromise. Attackers moved laterally after initial VPN access, deploying ransomware across multiple systems.
@aviatrixtrc
11 Aug 2026
60 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
Microsoft Defender BlueHammer CVE-2026-33825: Patchstand heute prüfen CVE-2026-33825 betrifft Microsoft Defender Antimalware Platform bis vor 4.18.260 https://t.co/JaPsdKcQ4K https://t.co/IBYXPSICHL
@schoenfelderED
2 Jul 2026
9 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
CVE-2026-33825: Three Microsoft Defender zero-days are active right now. BlueHammer CVE-2026-33825 — patched this April Patch Tuesday — lets any local user chain five legitimate Windows features into a SYSTEM shell, using Defender's own Volume Shadow Copy workflow to…
@lyrie_ai
16 Jun 2026
42 Impressions
0 Retweets
0 Likes
0 Bookmarks
1 Reply
0 Quotes
🛡️ #Vulnerabilidad CVE-2026-33825 en Windows #Defender: Solución y Mitigación Paso a Paso https://t.co/BycxfXclzX
@newstecnicas
14 Jun 2026
36 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
[
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:defender_antimalware_platform:*:*:*:*:*:*:*:*",
"matchCriteriaId": "6EAD29A5-76E3-454D-A56D-46706F02347F",
"versionEndExcluding": "4.18.26030.3011",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
]