Weakness / #5
CWE-119: Memory buffer bounds error in CISA KEV
Improper Restriction of Operations within the Bounds of a Memory Buffer
Answer 88 KEV entries list CWE-119 (Memory buffer bounds error) as of catalog 2026.10.30, 5% of the catalog and rank 5 of 198 weaknesses. The most affected vendor is Microsoft (34).
The software reads or writes memory outside the buffer it is meant to use.
- KEV entries
- 885% of catalog
- Vendors
- 18affected
- Ransomware: known
- 910.2%
- First added
- 2021-11-03
- Latest added
- 2026-10-04
VVendors
TAdditions by year
| Year | Added |
|---|---|
| 2021 | 8 |
| 2022 | 64 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 3 |
| 2026 | 8 |
PProducts
| Product | Entries | Share |
|---|---|---|
| Cisco IOS and IOS XE Software | 8 | 9.1% |
| Microsoft Office | 8 | 9.1% |
| Microsoft Windows | 7 | 8% |
| Microsoft Internet Explorer | 6 | 6.8% |
| Adobe Acrobat and Reader | 5 | 5.7% |
| Citrix NetScaler | 4 | 4.5% |
| Adobe Flash Player | 4 | 4.5% |
| Citrix NetScaler ADC and NetScaler Gateway | 3 | 3.4% |
EAll entries
Cite this
88 CISA KEV entries list CWE-119 (Memory buffer bounds error), 5% of the catalog. Source: KEV Now analysis of the CISA Known Exploited Vulnerabilities catalog, version 2026.10.30 (released 2026-10-30). https://kevnow.com/cwe/cwe-119/
Source: CISA KEV catalog v2026.10.30, released 2026-10-30. Windows end 2026-10-30.