Dynamics CRM Webclient Cross-site Scripting Vulnerability

published 2020-12-09 5y ago modified 2026-06-17 4mo ago also EUVD-2020-9101

cvss: 8.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits: 0; none known

Patch / fix

links 2

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Exploit prediction

1.40% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
CNA	3.1	8.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CNA	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N

Affected products

Microsoft Microsoft Dynamics 365 (on-premises) version 8.2
Microsoft Microsoft Dynamics 365 (on-premises) version 9.0

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

msrc.microsoft.com /update-guide/vulnerability/CVE-2020-17147
vendor-advisory, patch
portal.msrc.microsoft.com /en-US/security-guidance/advisory/CVE-2020-17147
patch, vendor-advisory

Sources

CVE List CVE-2020-17147
NVD CVE-2020-17147

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