CVE-2021-27197
Pelco
- Published
- 12 February 2021
- Last modified
- 17 June 2026
- CVSS
- 8.1 v3.1
- Severity
- high
- EPSS
- 0.8% (54th pct)
- CISA KEV
- Not listed
- NVD status
- Modified
- Weaknesses
- CWE-346
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
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.
Exploitation
Not listed in the CISA Known Exploited Vulnerabilities catalogue as of 2026.09.04. That is an absence of confirmed public exploitation, not evidence that exploitation has not occurred. EPSS models a 0.8% probability of exploitation activity in the next 30 days.
Affected products
| Product | Vendor | Type | Versions named |
|---|---|---|---|
| Digital Sentry Server | Pelco | Video management software | 7.18.72.11464, < 7.19.67 |
References
Vendor advisory and patch
- https://support.pelco.com/s/article/What-is-the-Digital-Sentry-software-release-revision-history
- 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 exploit
- https://github.com/vitorespf/Advisories/blob/master/Pelco_Digital_Sentry_Server_AFW.txt exploit
Record assembled from NVD, CISA KEV 2026.09.04 and FIRST EPSS 2026-09-04. Affected products are those NVD's CPE configuration names that fall inside this site's scope; a CVE may affect products outside it.