Unauthenticated crypto and weak IV in Magento\Framework\Encryption

published 2017-03-01 9 y ago modified 2026-06-17 4 mo ago also GHSA-h7qw-mxrm-c6h2 , EUVD-2019-0751

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 58%
public exploits: 0; none known

The __construct function in Framework/Encryption/Crypt.php in Magento 2 uses the PHP rand function to generate a random number for the initialization vector, which makes it easier for remote attackers to defeat cryptographic protection mechanisms by guessing the value.

Patch / fix

fixed in 1 links 1

packagist magento/community-edition 2.2.6

github.com/magento/magento2#15017 pull request

Exploit prediction

0.85% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N
GitHub	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	magento/community-edition	>=2.0, <2.2.6	2.2.6
packagist	magento/project-community-edition	>=2.0, <=2.0.2	no fix listed

Classification

Weakness

CWE-327 Use of a Broken or Risky Cryptographic Algorithm

References

github.com /magento/magento2/pull/15017
web
openwall.com /lists/oss-security/2016/07/19/3
mailing-list, web, third-party-advisory
openwall.com /lists/oss-security/2016/07/27/14
mailing-list, web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2016-6485
advisory
github.com /FriendsOfPHP/security-advisories/blob/master/magento/product-community-edition/CVE-2016-6485.yaml
web

Sources

CVE List CVE-2016-6485
GitHub Advisory GHSA-h7qw-mxrm-c6h2
NVD CVE-2016-6485

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary