CVE-2016-6485

Unauthenticated crypto and weak IV in Magento\Framework\Encryption

7.5 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

0.85%Down 0.3 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2016-6485
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness: CWE-327
Updated: 2026-11-02

CVE List No score

Record: CVE-2016-6485
Updated: 2026-11-02

EUVDEUVD-2019-0751 No score

Record: EUVD-2019-0751
Updated: 2026-11-03

GitHub AdvisoriesGHSA-h7qw-mxrm-c6h2 7.5

Unauthenticated crypto and weak IV in Magento\Framework\Encryption

Record: GHSA-h7qw-mxrm-c6h2
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-327
Updated: 2026-11-02

OSVGHSA-h7qw-mxrm-c6h2 7.5

Unauthenticated crypto and weak IV in Magento\Framework\Encryption

Record: GHSA-h7qw-mxrm-c6h2
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-327
Updated: 2026-11-02

Affected products

magento magento2

Affected packages

Affected packages
Package	Affected	Fixed
`magento/community-edition` Packagist	2.0 up to 2.2.6	2.2.6
`magento/project-community-edition` Packagist	2.0 to 2.0.2	None known
`magento/community-edition` Packagist	2.0 up to 2.2.6, plus listed versions 2.0.02.0.0-rc2.0.0-rc22.0.12.0.10 Show 44 moreShow less 2.0.112.0.122.0.132.0.142.0.152.0.162.0.172.0.182.0.22.0.32.0.42.0.52.0.62.0.72.0.82.0.92.1.02.1.0-rc12.1.0-rc22.1.0-rc32.1.12.1.102.1.112.1.122.1.132.1.142.1.152.1.162.1.172.1.182.1.22.1.32.1.42.1.52.1.62.1.72.1.82.1.92.2.02.2.12.2.22.2.32.2.42.2.5	2.2.6
`magento/project-community-edition` Packagist	2.0 to 2.0.2, plus listed versions 2.0.02.0.0-rc2.0.0-rc22.0.1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-6485 is a high vulnerability (CVSS 7.5) in Magento Magento2, published March 1, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.85%, the 58th percentile. Fixed in magento/community-edition 2.2.6.