CVE-2021-27184: Pelco Digital Sentry Server 7.18.72.11464 has an XML External Entity vulnerability (exploitable via the DTD pa

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2021-27184 is a high-severity flaw (CVSS 7.5) affecting digital sentry server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Pelco Digital Sentry Server 7.18.72.11464 has an XML External Entity vulnerability (exploitable via the DTD parameter entities technique), resulting in disclosure and retrieval of arbitrary data on the affected node via an out-of-band (OOB) attack. The vulnerability is triggered when input passed to the XML parser is not sanitized while parsing the ControlPointCacheShare.xml file (in a %APPDATA%\Pelco directory) when DSControlPoint.exe is execute

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Weakness	CWE-611
Published	2021-02-11
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

2021-02-11 18:15 UTCPublished CVE record published
2026-06-17 03:44 UTCUpdated Record last modified

pelco digital sentry server DOWNGRADE

Affected: 7.18.72.11464

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.18.72.11464

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 7.18.72.11464 (Debian / Ubuntu)

apt-cache madison digital-sentry-server sudo apt install digital-sentry-server=<VERSION_BEFORE_7.18.72.11464> sudo apt-mark hold digital-sentry-server

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list digital-sentry-server sudo dnf downgrade digital-sentry-server-<VERSION_BEFORE_7.18.72.11464> sudo dnf versionlock add digital-sentry-server

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2021-27184?

digital sentry server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-27184 being exploited?

CVE-2021-27184 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-2021-27184 affect?

CVE-2021-27184 affects digital sentry server. Severity is high (CVSS 7.5). Pelco Digital Sentry Server 7.18.72.11464 has an XML External Entity vulnerability (exploitable via the DTD parameter entities technique), resulting in disclosure and retrieval of arbitrary data on the affected node via an out-of-band (OOB)

How urgent is CVE-2021-27184?

Priority 55/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

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-2021-27197 HIGH 8.1 UPGRADE DSUtility.dll in Pelco Digital Sentry Server before 7.19.67 has an arbitrary file write vulnerability

References

← Back to latest CVEs