CVE-2026-10047— Out-of-bounds write in Napoca real-mode hook handler via guest-controlled SS:SP (VA-13905)
Possible ATT&CK Techniques 1AI
T1203 · Exploitation for Client ExecutionAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Bitdefender | Napoca bare-metal hypervisor | all | affected |
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I. Basic Information for CVE-2026-10047
Vulnerability Information
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Vulnerability Title
Out-of-bounds write in Napoca real-mode hook handler via guest-controlled SS:SP (VA-13905)
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Bitdefender Napoca bare-metal hypervisor contains an out-of-bounds write vulnerability in the real-mode hook handler, implemented in napoca/kernel/handler.c. The handler uses a guest-controlled SS:SP-derived offset as an index into the 1MB RealModeMemory buffer without bounds validation. With SS=0xFFFF and ESP=0xFFFF, the computed offset can reach 0x10FFEF, exceeding the RealModeMemory buffer by 65,519 bytes. The IRET frame push can therefore write past the end of the 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-2026-10047
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-10047 (1)
IV. Related Vulnerabilities
Same vendor: Bitdefender
- CVE-2026-10046
Out-of-bounds write in Napoca BIOS INT 0x15 E820 memory map - 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-2026-10047
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