CVE-2026-10046— Out-of-bounds write in Napoca BIOS INT 0x15 E820 memory map handler (VA-13905)
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Bitdefender | Napoca bare-metal hypervisor | all | affected |
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I. Basic Information for CVE-2026-10046
Vulnerability Information
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Vulnerability Title
Out-of-bounds write in Napoca BIOS INT 0x15 E820 memory map handler (VA-13905)
Source: NVD (National Vulnerability Database)
Vulnerability Description
Bitdefender Napoca bare-metal hypervisor contains an out-of-bounds write vulnerability in the BIOS INT 0x15 / E820 memory map handler, implemented in napoca/guests/bios_handlers.c. The handler computes a destination offset into the guest RealModeMemory buffer from guest-controlled ES and EDI register values without validating that the resulting address remains within the 1MB RealModeMemory allocation. A malicious guest operating in real mode can trigger the issue by invoking INT 0x15 with AX=0xE820, EDX=0x534D4150, ECX greater than or equal to 20, EBX=0, ES=0xFFFF, and EDI=0xFFFF. This can cause a write of up to 20 bytes past the end of the RealModeMemory buffer into the hypervisor heap. The product is end-of-life and unsupported when assigned.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存写
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Bitdefender | Napoca bare-metal hypervisor | all | - |
II. Public POCs for CVE-2026-10046
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-10046 (1)
IV. Related Vulnerabilities
Same vendor: Bitdefender
- CVE-2026-10047
Out-of-bounds write in Napoca real-mode hook handler via gue - CVE-2025-7073
Local Privilege Escalation via Arbitrary File Operation in B - CVE-2025-5317
Improper access restriction to critical folder in Bitdefende - CVE-2025-2245
Server Side Request Forgery in GravityZone Update Server Usi - CVE-2025-2243
SSRF in GravityZone Console via DNS Truncation (VA-12634)
Same weakness: CWE-787
V. Comments for CVE-2026-10046
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