CVE-2021-21426 is a critical deserialization vulnerability affecting Magento-lts versions 19.4.12 and prior, and 20.0.8 and prior. This flaw, stemming from unsecured object deserialization, allows for unauthenticated, low-complexity attacks over the network, leading to complete compromise of confidentiality, integrity, and availability. While a patch exists in versions 19.4.13 and 20.0.9, there is currently no public exploit code available, and it is not listed on the CISA KEV catalog, indicating no active exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 19.4.13CPE matchmatch criteria | cpe:2.3:a:openmage:magento:*:*:*:*:lts:*:*:* | ||
>= 20.0.0, < 20.0.9CPE matchmatch criteria | cpe:2.3:a:openmage:magento:*:*:*:*:lts:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.