CVE-2021-27197

HighCVSS 8.1/10Last modified Jun 17, 2026

Description

DSUtility.dll in Pelco Digital Sentry Server before 7.19.67 has an arbitrary file write vulnerability. The AppendToTextFile method doesn't check if it's being called from the application or from a malicious user. The vulnerability is triggered when a remote attacker crafts an HTML page (e.g., with "OBJECT classid=" and "<SCRIPT language='vbscript'>") to overwrite arbitrary files.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Weakness enumeration

CWE-346

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/vitorespf/Advisories/blob/master/Pelco_Digital_Sentry_Server_AFW.txtExploit, Third Party Advisory
https://support.pelco.com/s/article/What-is-the-Digital-Sentry-software-release-revision-historyRelease Notes, Vendor Advisory
https://github.com/vitorespf/Advisories/blob/master/Pelco_Digital_Sentry_Server_AFW.txtExploit, Third Party Advisory
https://support.pelco.com/s/article/What-is-the-Digital-Sentry-software-release-revision-historyRelease Notes, Vendor Advisory

Timeline

Published: Feb 12, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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