KEV 2026.09.231,721 entries+8 in 7d8 open federal deadlinesas of / search ? keys
Telemetry

Weakness / #61

CWE-522 in CISA KEV

Catalog
2026.09.23
Rank
#61 of 185
MITRE
CWE-522 definition

Answer 4 KEV entries list CWE-522 as of catalog 2026.09.23, 0.2% of the catalog and rank 61 of 185 weaknesses. The most affected vendor is Rockwell (1).

KEV entries
40.2% of catalog
Vendors
4affected
Ransomware: known
125%
First added
2021-11-03
Latest added
2026-03-05

VVendors

Vendors with CWE-522 KEV entries
VendorEntriesShare
Rockwell125%
Kaseya125%
Zyxel125%
Progress125%

TAdditions by year

CWE-522 KEV additions per yearColumn chart of KEV additions per calendar year. 2021: 3; 2022: 0; 2023: 0; 2024: 0; 2025: 0; 2026: 1.01232021: 3 added320212022: 0 added20222023: 0 added20232024: 0 added20242025: 0 added20252026: 1 added (year to date)12026
CWE-522 KEV additions by year
YearAdded
20213
20220
20230
20240
20250
20261

PProducts

Products with CWE-522 KEV entries
ProductEntriesShare
Rockwell Multiple Products125%
Kaseya Virtual System/Server Administrator (VSA)125%
Zyxel Multiple Products125%
Progress ASP.NET AJAX and Sitefinity125%

EAll entries

KEV entries listing CWE-522
CVEVendorProductAddedRansomware
CVE-2021-22681RockwellMultiple ProductsUnknown
CVE-2021-30116KaseyaVirtual System/Server Administrator (VSA)Known
CVE-2020-29583ZyxelMultiple ProductsUnknown
CVE-2017-9248ProgressASP.NET AJAX and SitefinityUnknown

Cite this

4 CISA KEV entries list CWE-522, 0.2% of the catalog. Source: Telemetry analysis of the CISA Known Exploited Vulnerabilities catalog, version 2026.09.23 (released 2026-09-23). https://glide-telemetry.pages.dev/cwe/cwe-522/

Source: CISA KEV catalog v2026.09.23, released 2026-09-23. Windows end 2026-09-23. Pages for weaknesses with fewer than 5 entries are excluded from search indexes.

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