CVE-2015-7764

Name: CVE-2015-7764
Creator: NVD / NIST
Published: 2017-08-09T16:29:00.363+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.51%

Last modified Jun 17, 2026

CVE-2015-7764 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Lemur 0.1.4 does not use sufficient entropy in its IV when encrypting AES in CBC mode.. EPSS estimates a 1.51% chance of exploitation in the next 30 days.

Description

Lemur 0.1.4 does not use sufficient entropy in its IV when encrypting AES in CBC mode.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.51%

71.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-331

Affected Software

Vendor	Product	Versions
Netflix	Lemur	0.1.4

References

http://www.openwall.com/lists/oss-security/2015/10/20/3Mailing List, Third Party Advisory
https://github.com/Netflix/lemur/issues/117Third Party Advisory
https://github.com/kvesteri/sqlalchemy-utils/issues/166Third Party Advisory
http://www.openwall.com/lists/oss-security/2015/10/20/3Mailing List, Third Party Advisory
https://github.com/Netflix/lemur/issues/117Third Party Advisory
https://github.com/kvesteri/sqlalchemy-utils/issues/166Third Party Advisory

Timeline

Published: Aug 9, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-7764?

Lemur 0.1.4 does not use sufficient entropy in its IV when encrypting AES in CBC mode.

How severe is CVE-2015-7764?

CVE-2015-7764 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.51% probability of exploitation in the next 30 days.

How do I fix CVE-2015-7764?

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-2015-7764?

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

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Source: NVD / NIST