This vulnerability allows remote attackers to execute arbitrary code on affected installations of NIKON NIS-Elements Viewer 1.2100.1483.0. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of TIF images. Crafted data in a TIF file can trigger a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-15166.
Conclusion & alert: CVE-2022-40658 is rated Moderate Risk (49.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.30%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-11-21 | 0.41% | 0.30% | -0.11% |
| 2 | 2025-11-18 | 0.30% | 0.41% | +0.11% |
| 3 | 2025-09-17 | — | 0.30% | — |
Full EPSS history (14 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 7.8 | 3.0 | HIGH |
|
1.8 | 5.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| nikon | nis-elements_viewer | 1.2100.1483.0 | cpe:2.3:a:nikon:nis-elements_viewer:1.2100.1483.0:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-22-1214/ | Third Party Advisory VDB Entry |
| https://www.software-dl.microscope.healthcare.nikon.com/vuln/index.html | Product |
| https://www.software-dl.microscope.healthcare.nikon.com/vuln/pdf/Vulnerabilities_on_NIS-Elements_Freeware_and_L_en_240917_02.pdf | Third Party Advisory |