CVE-2022-40661

Code execution via unchecked BMP buffer copy

Published Sep 15, 2022 · Updated Jan 7, 2025

Heap-based buffer overflow in Nikon NIS-Elements Viewer 5.21.00 and earlier allows attackers to execute code through a crafted BMP image. The BMP parser copies user-supplied data into a heap buffer without first validating its declared length against the destination. Exploitation requires a user to open the image or visit a page that supplies it, and resulting code runs in the current process.

CVSS severity7.8
High
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Nikon NIS-Elements Viewer 5.21.00 and earlier allows attackers to execute code through a crafted BMP image. The BMP parser copies user-supplied data into a heap buffer without first validating its declared length against the destination. Exploitation requires a user to open the image or visit a page that supplies it, and resulting code runs in the current process.

The record

CVE
CVE-2022-40661
Published
Sep 15, 2022
Updated
Jan 7, 2025
Vendor
Nikon Corporation
Product
NIS-Elements Viewer
Classifications
CWE-122, CWE-787, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Jan 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.2100.1483.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Nikon Corporation · NIS-Elements Viewerversion=1.2100.1483.0

Published CVSS scores

7.8Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
CWE-787Out-of-bounds Write
T1204.002User Execution: Malicious File
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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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