CVE-2021-3196

Name: CVE-2021-3196
Creator: NVD / NIST
Published: 2021-06-09T15:15:08.797+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.96%

Last modified Jun 17, 2026

CVE-2021-3196 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered in Hitachi ID Bravura Security Fabric 11.0.0 through 11.1.3, 12.0.0 through 12.0.2, and 12.1.0. When using federated identity management (authenticating via SAML through a third-party identity provider), an attacker can inject additional data into a signed SAML response being transmitted to the service provider (ID Bravura Security Fabric). EPSS estimates a 0.96% chance of exploitation in the next 30 days.

Description

An issue was discovered in Hitachi ID Bravura Security Fabric 11.0.0 through 11.1.3, 12.0.0 through 12.0.2, and 12.1.0. When using federated identity management (authenticating via SAML through a third-party identity provider), an attacker can inject additional data into a signed SAML response being transmitted to the service provider (ID Bravura Security Fabric). The application successfully validates the signed values but uses the unsigned malicious values. An attacker with lower-privilege access to the application can inject the username of a high-privilege user to impersonate that user.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.96%

57.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-347

Affected Software

Vendor	Product	Versions
Hitachi	Id Bravura Security Fabric	>= 11.0.0, <= 11.1.3
Hitachi	Id Bravura Security Fabric	>= 12.0.0, <= 12.0.2
Hitachi	Id Bravura Security Fabric	12.1.0

References

https://www.hitachi-id.com/cve-2021-3196-attackers-can-impersonate-another-userVendor Advisory
https://www.hitachi.com/hirt/hitachi-sec/2021/601.htmlExploit, Vendor Advisory
https://www.hitachi.com/hirt/security/index.htmlVendor Advisory
https://www.hitachi-id.com/cve-2021-3196-attackers-can-impersonate-another-userVendor Advisory
https://www.hitachi.com/hirt/hitachi-sec/2021/601.htmlExploit, Vendor Advisory
https://www.hitachi.com/hirt/security/index.htmlVendor Advisory

Timeline

Published: Jun 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3196?

How severe is CVE-2021-3196?

CVE-2021-3196 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.96% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3196?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3196?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST