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CVE-2015-7764

19
FAUCET Score

CVE-2015-7764 describes a critical vulnerability in Netflix Lemur version 0.1.4, where the application fails to generate sufficiently random Initialization Vectors (IVs) for AES encryption in CBC mode. This weakness, categorized as CWE-331 (Insufficient Entropy), carries a high CVSS score of 7.5, indicating that an unauthenticated attacker could exploit this over the network with low complexity to achieve high confidentiality impact. Despite its severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
0.1.4CPE matchmatch criteria
cpe:2.3:a:netflix:lemur:0.1.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.50%
Probability of exploitation in next 30 days
EPSS Percentile
71.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0150 is in the 53rd percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: lemurFixed in: 0.1.5

Vendor Advisories (1)

pipGHSA-chg9-3c3p-ch23high

Lemur uses static IV per key

May 13, 2022

References

github.com / kvesteri/sqlalchemy-utils/issues/166
Third Party Advisory
github.com / Netflix/lemur/issues/117
Third Party Advisory
openwall.com / lists/oss-security/2015/10/20/3
Mailing ListThird Party Advisory