Buffer Overflow
4,245 CVEs across 168 months on the top 50 list since Sep 1999. Peak rank #1 in 5 months, last Jul 2004.
CWE-120 CVEs per month since Sep 1999
Oct 2021: 33 CVEs · rank #12Nov 2021: 41 CVEs · rank #8Dec 2021: 47 CVEs · rank #11Jan 2022: 25 CVEs · rank #17Feb 2022: 29 CVEs · rank #17Mar 2022: 44 CVEs · rank #11Apr 2022: 22 CVEs · rank #22May 2022: 36 CVEs · rank #11Jun 2022: 22 CVEs · rank #21Jul 2022: 50 CVEs · rank #8Aug 2022: 58 CVEs · rank #9Sep 2022: 35 CVEs · rank #16Oct 2022: 28 CVEs · rank #19Nov 2022: 30 CVEs · rank #18Dec 2022: 82 CVEs · rank #6Jan 2023: 99 CVEs · rank #4Feb 2023: 23 CVEs · rank #23Mar 2023: not on the top 50 that monthApr 2023: 33 CVEs · rank #18May 2023: 69 CVEs · rank #7Jun 2023: 46 CVEs · rank #13Jul 2023: 32 CVEs · rank #18Aug 2023: 81 CVEs · rank #6Sep 2023: 44 CVEs · rank #10Oct 2023: 47 CVEs · rank #17Nov 2023: 54 CVEs · rank #12Dec 2023: 40 CVEs · rank #15Jan 2024: 57 CVEs · rank #15Feb 2024: 34 CVEs · rank #20Mar 2024: 40 CVEs · rank #18Apr 2024: 54 CVEs · rank #16May 2024: 64 CVEs · rank #18Jun 2024: 34 CVEs · rank #21Jul 2024: 49 CVEs · rank #19Aug 2024: 51 CVEs · rank #17Sep 2024: 70 CVEs · rank #7Oct 2024: 83 CVEs · rank #12Nov 2024: 107 CVEs · rank #8Dec 2024: 42 CVEs · rank #16Jan 2025: 87 CVEs · rank #8Feb 2025: 48 CVEs · rank #17Mar 2025: 53 CVEs · rank #20Apr 2025: 85 CVEs · rank #13May 2025: 133 CVEs · rank #9Jun 2025: 113 CVEs · rank #7Jul 2025: 66 CVEs · rank #18Aug 2025: 52 CVEs · rank #23Sep 2025: 47 CVEs · rank #26Oct 2025: 51 CVEs · rank #24Nov 2025: 34 CVEs · rank #28Dec 2025: 57 CVEs · rank #24Jan 2026: 82 CVEs · rank #18Feb 2026: 98 CVEs · rank #14Mar 2026: 60 CVEs · rank #32Apr 2026: 143 CVEs · rank #13May 2026: 80 CVEs · rank #30Jun 2026: 72 CVEs · rank #36Jul 2026: 52 CVEs · rank #38Aug 2026: 62 CVEs · rank #40Sep 2026 so far: 85 CVEs · rank #29
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 5 months, last Jul 2004
- Busiest month
- Apr 2026, 143 CVEs
- First on the list
- Sep 1999
- On the top 50 list
- 168 of 325 monthly snapshots