CVE-2021-27197: DSUtility.dll in Pelco Digital Sentry Server before 7.19.67 has an arbitrary file write vulnerability

Q: How do I fix CVE-2021-27197?

digital sentry server: upgrade to 7.19.67. Exact commands for each OS are on this page.

Q: Is CVE-2021-27197 being exploited?

CVE-2021-27197 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-27197 affect?

CVE-2021-27197 affects digital sentry server. Severity is high (CVSS 8.1). 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 trigge

Q: How urgent is CVE-2021-27197?

Priority 47/100. High severity; Public exploit reference

This month

HIGH 8.1UPGRADE

CVE-2021-27197 is a high-severity flaw (CVSS 8.1) affecting digital sentry server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-346
Published	2021-02-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pelco

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-02-12 16:15 UTCPublished CVE record published
2026-06-17 03:44 UTCUpdated Record last modified

pelco digital sentry server UPGRADE

Affected: < 7.19.67

Fixed in: 7.19.67

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy digital-sentry-server || rpm -q digital-sentry-server || digital-sentry-server --version

2. UPGRADE to 7.19.67 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade digital-sentry-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade digital-sentry-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-27197?

digital sentry server: upgrade to 7.19.67. Exact commands for each OS are on this page.

Is CVE-2021-27197 being exploited?

CVE-2021-27197 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-27197 affect?

CVE-2021-27197 affects digital sentry server. Severity is high (CVSS 8.1). 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 trigge

How urgent is CVE-2021-27197?

Priority 47/100. High severity; Public exploit reference

Related CVEs

CVE-2021-27232 HIGH 8.8 DOWNGRADE The RTSPLive555.dll ActiveX control in Pelco Digital Sentry Server 7.18.72.11464 has a SetCameraConnectionPara
CVE-2021-27184 HIGH 7.5 DOWNGRADE Pelco Digital Sentry Server 7.18.72.11464 has an XML External Entity vulnerability (exploitable via the DTD pa

References

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