CVE-2022-41415Public exploit

Code execution via oversized NVRAM read

Published Oct 19, 2022 · Updated Jul 9, 2026

Stack-based buffer overflow in Acer Altos W2000h-W570h F4 firmware R01.03.0018 allows attackers to execute code via crafted NVRAM data. The ReserveMem DXE driver calls gRT->GetVariable with a hard-coded 1827-byte size for a much smaller stack buffer, allowing an oversized ReserveMemFlag value to overwrite the return address. Modifying the variable requires local or physical firmware access; successful exploitation can interrupt boot or install code that persists in SPI flash across operating-system boots.

CVSS severity9.8
Critical
EPSS probability0.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Stack-based buffer overflow in Acer Altos W2000h-W570h F4 firmware R01.03.0018 allows attackers to execute code via crafted NVRAM data. The ReserveMem DXE driver calls gRT->GetVariable with a hard-coded 1827-byte size for a much smaller stack buffer, allowing an oversized ReserveMemFlag value to overwrite the return address. Modifying the variable requires local or physical firmware access; successful exploitation can interrupt boot or install code that persists in SPI flash across operating-system boots.

The record

CVE
CVE-2022-41415
Published
Oct 19, 2022
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1542.001
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1542.001Pre-OS Boot: System Firmware

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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