NULL Pointer Dereference
5,238 CVEs across 177 months on the top 50 list since Sep 1999. Peak rank #1 in Dec 2003.
CWE-476 CVEs per month since Sep 1999
Oct 2021: 17 CVEs · rank #23Nov 2021: 21 CVEs · rank #18Dec 2021: 31 CVEs · rank #15Jan 2022: 67 CVEs · rank #6Feb 2022: 35 CVEs · rank #15Mar 2022: 33 CVEs · rank #16Apr 2022: 35 CVEs · rank #14May 2022: 32 CVEs · rank #14Jun 2022: 19 CVEs · rank #22Jul 2022: 36 CVEs · rank #11Aug 2022: 35 CVEs · rank #14Sep 2022: 32 CVEs · rank #17Oct 2022: 22 CVEs · rank #24Nov 2022: 21 CVEs · rank #27Dec 2022: 36 CVEs · rank #17Jan 2023: 22 CVEs · rank #23Feb 2023: 22 CVEs · rank #28Mar 2023: not on the top 50 that monthApr 2023: 32 CVEs · rank #20May 2023: 24 CVEs · rank #22Jun 2023: 20 CVEs · rank #27Jul 2023: 19 CVEs · rank #23Aug 2023: 25 CVEs · rank #20Sep 2023: 8 CVEs · rank #48Oct 2023: 18 CVEs · rank #28Nov 2023: 20 CVEs · rank #24Dec 2023: 17 CVEs · rank #28Jan 2024: 23 CVEs · rank #27Feb 2024: 90 CVEs · rank #7Mar 2024: 64 CVEs · rank #11Apr 2024: 109 CVEs · rank #9May 2024: 226 CVEs · rank #6Jun 2024: 72 CVEs · rank #7Jul 2024: 77 CVEs · rank #8Aug 2024: 106 CVEs · rank #5Sep 2024: 89 CVEs · rank #4Oct 2024: 118 CVEs · rank #5Nov 2024: 68 CVEs · rank #15Dec 2024: 123 CVEs · rank #6Jan 2025: 76 CVEs · rank #11Feb 2025: 180 CVEs · rank #3Mar 2025: 69 CVEs · rank #15Apr 2025: 94 CVEs · rank #9May 2025: 144 CVEs · rank #6Jun 2025: 81 CVEs · rank #11Jul 2025: 131 CVEs · rank #6Aug 2025: 104 CVEs · rank #9Sep 2025: 179 CVEs · rank #5Oct 2025: 144 CVEs · rank #5Nov 2025: 30 CVEs · rank #29Dec 2025: 36 CVEs · rank #30Jan 2026: 85 CVEs · rank #16Feb 2026: 55 CVEs · rank #28Mar 2026: 81 CVEs · rank #27Apr 2026: 80 CVEs · rank #26May 2026: 208 CVEs · rank #7Jun 2026: 74 CVEs · rank #35Jul 2026: 69 CVEs · rank #35Aug 2026: 90 CVEs · rank #32Sep 2026 so far: 61 CVEs · rank #35
Year by year
Each year's months on the top 50 list of weakness classes. Pick a year to read it in the lens.
The record
- Peak rank
- #1 in Dec 2003
- Busiest month
- May 2024, 226 CVEs
- First on the list
- Sep 1999
- On the top 50 list
- 177 of 325 monthly snapshots