CRITICAL

CVE-2018-9843

CVSS v3

9.8

CRITICAL

EPSS Score

16.7 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2018-9843 yet.

Full record on NVD

Description

The REST API in CyberArk Password Vault Web Access before 9.9.5 and 10.x before 10.1 allows remote attackers to execute arbitrary code via a serialized .NET object in an Authorization HTTP header.

Technical details

Published: 2018-04-12
Exploit-DB: EDB-44429

Frequently asked questions

What is CVE-2018-9843?

The REST API in CyberArk Password Vault Web Access before 9.9.5 and 10.x before 10.1 allows remote attackers to execute arbitrary code via a serialized .NET object in an Authorization HTTP header.

Is CVE-2018-9843 actively exploited?

Active exploitation of CVE-2018-9843 has not been confirmed. Its EPSS score was 16.7% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-9843?

CVE-2018-9843 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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