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Vulnerability record · CVE-2018-9843 · published 12 April 2018

CVE-2018-9843: Cyberark password vault deserialization of untrusted data vulnerability

Cyberark · Password Vault

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.

9.8 CVSS 3.0 Critical EPSS 17% · top 3.1% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.0 base score, v2 7.5
17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 8 tagged exploit
17 Jun 2026Last modified by 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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://seclists.org/fulldisclosure/2018/Apr/18 ExploitMailing ListThird Party Advisory
http://www.securityfocus.com/archive/1/541932/100/0/threaded ExploitThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040675 Third Party AdvisoryVDB Entry
https://www.exploit-db.com/exploits/44429/ ExploitThird Party AdvisoryVDB Entry
https://www.redteam-pentesting.de/en/advisories/rt-sa-2017-014/-cyberark-password-vault-web-access-remote-code-execution ExploitThird Party Advisory
http://seclists.org/fulldisclosure/2018/Apr/18 ExploitMailing ListThird Party Advisory
http://www.securityfocus.com/archive/1/541932/100/0/threaded ExploitThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040675 Third Party AdvisoryVDB Entry
https://www.exploit-db.com/exploits/44429/ ExploitThird Party AdvisoryVDB Entry
https://www.redteam-pentesting.de/en/advisories/rt-sa-2017-014/-cyberark-password-vault-web-access-remote-code-execution ExploitThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-9843), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.