What’s Vulnerable › Vulnerabilities

CVE-2021-27197

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-02-12 · updated 2026-06-17
• Weakness: CWE-346

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.

Affected products

• Pelco Digital Sentry Server: before 7.19.67 — fixed in 7.19.67

How to fix

Upgrade to a fixed version: Pelco Digital Sentry Server 7.19.67. Check the vendor advisory for mitigations.

References

• https://github.com/vitorespf/Advisories/blob/master/Pelco_Digital_Sentry_Server_AFW.txt
• https://support.pelco.com/s/article/What-is-the-Digital-Sentry-software-release-revision-history
• https://github.com/vitorespf/Advisories/blob/master/Pelco_Digital_Sentry_Server_AFW.txt
• https://support.pelco.com/s/article/What-is-the-Digital-Sentry-software-release-revision-history

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