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CVE-2026-35421

⚠️ high
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Summary

Heap-based buffer overflow in Windows GDI allows an unauthorized attacker to execute code locally.

CVSS Score
7.8
High
EPSS Score
0.1
Exploit Probability
Published Date
2026-05-12
First Seen: 2026-05-17
📊 Relative Risk Intelligence

This CVE is Moderate Risk - more severe than 69.7% of all 321,566 vulnerabilities in our database.

#97,378
Above average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: May 7, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Total
Complete system compromise possible
SSVC data provided by CISA
Last Modified 2026-05-14
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE IDs (Weakness Types)
CWE-122

📦 Affected Products 15

Vendor Product Status Affected Versions
microsoft windows_server_2012 Affected
v-
microsoft windows_server_2012 Affected
vr2
microsoft windows_server_2016 Affected
< 10.0.14393.9140
microsoft windows_server_2019 Affected
< 10.0.17763.8755
microsoft windows_server_2022 Affected
< 10.0.20348.5074
microsoft windows_10_1809 Affected
< 10.0.17763.8755
microsoft windows_10_21h2 Affected
< 10.0.19044.7291
microsoft windows_10_22h2 Affected
< 10.0.19045.7291
microsoft windows_10_1607 Affected
< 10.0.14393.9140
microsoft windows_11_23h2 Affected
< 10.0.22631.7079
microsoft windows_server_2022_23h2 Affected
< 10.0.25398.2330
microsoft windows_11_24h2 Affected
< 10.0.26100.8390
microsoft windows_server_2025 Affected
< 10.0.26100.32772
microsoft windows_11_25h2 Affected
< 10.0.26200.8390
microsoft windows_11_26h1 Affected
< 10.0.28000.2113

🔗 References 1

https://msrc.microsoft.com/update-guide/vulnerabilit...
Vendor Advisory

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-21530 🔶 medium 6.7 0.1 Double free in Windows Rich Text Edit allows an authorized attacker to elevate privileges locally. 2026-05-12
CVE-2026-32161 ⚠️ high 7.5 0.1 Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Native WiFi Minip... 2026-05-12
CVE-2026-32170 🔶 medium 6.7 0.1 Double free in Windows Rich Text Edit Control allows an authorized attacker to elevate privileges locally. 2026-05-12
CVE-2026-32209 🔶 medium 4.4 0.0 Improper access control in Windows Filtering Platform (WFP) allows an authorized attacker to bypass a security feature l... 2026-05-12
CVE-2026-33834 ⚠️ high 7.8 0.0 Improper access control in Windows Event Logging Service allows an authorized attacker to elevate privileges locally. 2026-05-12
CVE-2026-33837 ⚠️ high 7.8 0.1 Heap-based buffer overflow in Windows TCP/IP allows an authorized attacker to elevate privileges locally. 2026-05-12
These CVEs affect the same products