How severe is CVE-2021-27197?

CVE-2021-27197 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2021-27197 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27197?

CVE-2021-27197 affects Pelco Digital Sentry Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-27197?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-27197 published?

CVE-2021-27197 was published on 2021-02-12 and last updated on 2026-06-17.

CVE-2021-27197

CVE-2021-27197 is a high-severity vulnerability in Pelco Digital Sentry Server with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-346.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 8.8
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-346
Affected product: Pelco Digital Sentry Server
Published: 2021-02-12
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-27197?: 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.
How severe is CVE-2021-27197?: CVE-2021-27197 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2021-27197 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27197?: CVE-2021-27197 affects Pelco Digital Sentry Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-27197?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-27197 published?: CVE-2021-27197 was published on 2021-02-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pelco:digital_sentry_server:*:*:*:*:*:*:*:*

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