XnView Classic for Windows Version 2.40 allows attackers to execute arbitrary code or cause a denial of service via a crafted .jb2 file, related to a "User Mode Write AV starting at ntdll_77400000!RtlFillMemoryUlong+0x0000000000000010."
CVE-2017-14270
HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence
Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-17. NVD baseline CVSS 7.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.8
- EG Score
- 7.8(medium)
- EPSS
- 28.4%
- KEV
- Not listed
Published
September 11, 2017
Last Modified
May 13, 2026
References (2)
- cve@mitrehttps://github.com/wlinzi/security_advisories/tree/master/CVE-2017-14270
- af854a3a-2127-422b-91ae-364da2661108https://github.com/wlinzi/security_advisories/tree/master/CVE-2017-14270
Frequently asked(5)
What is CVE-2017-14270?
CVE-2017-14270 is a high vulnerability published on September 11, 2017. XnView Classic for Windows Version 2.40 allows attackers to execute arbitrary code or cause a denial of service via a crafted .jb2 file, related to a "User Mode Write AV starting at ntdll_77400000!RtlFillMemoryUlong+0x0000000000000010."
When was CVE-2017-14270 disclosed?
CVE-2017-14270 was first published in the National Vulnerability Database on September 11, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-14270 actively exploited?
CVE-2017-14270 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-14270?
CVE-2017-14270 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2017-14270?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-14270, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2017-14270
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