Improper Authentication
4,689 CVEs across 234 months on the top 50 list since Sep 1999. Peak rank #4 in Jun 2002.
CWE-287 CVEs per month since Sep 1999
Oct 2021: 21 CVEs · rank #16Nov 2021: 24 CVEs · rank #15Dec 2021: 40 CVEs · rank #13Jan 2022: 29 CVEs · rank #14Feb 2022: 24 CVEs · rank #20Mar 2022: 38 CVEs · rank #14Apr 2022: 35 CVEs · rank #13May 2022: 33 CVEs · rank #13Jun 2022: 33 CVEs · rank #15Jul 2022: 27 CVEs · rank #16Aug 2022: 33 CVEs · rank #16Sep 2022: 53 CVEs · rank #9Oct 2022: 37 CVEs · rank #15Nov 2022: 37 CVEs · rank #14Dec 2022: 49 CVEs · rank #14Jan 2023: 38 CVEs · rank #16Feb 2023: 26 CVEs · rank #22Mar 2023: not on the top 50 that monthApr 2023: 35 CVEs · rank #16May 2023: 34 CVEs · rank #17Jun 2023: 29 CVEs · rank #18Jul 2023: 26 CVEs · rank #19Aug 2023: 32 CVEs · rank #16Sep 2023: 31 CVEs · rank #16Oct 2023: 38 CVEs · rank #21Nov 2023: 39 CVEs · rank #15Dec 2023: 34 CVEs · rank #19Jan 2024: 28 CVEs · rank #24Feb 2024: 34 CVEs · rank #21Mar 2024: 29 CVEs · rank #25Apr 2024: 25 CVEs · rank #29May 2024: 27 CVEs · rank #32Jun 2024: 46 CVEs · rank #15Jul 2024: 35 CVEs · rank #24Aug 2024: 26 CVEs · rank #23Sep 2024: 29 CVEs · rank #22Oct 2024: 25 CVEs · rank #28Nov 2024: 21 CVEs · rank #36Dec 2024: 21 CVEs · rank #31Jan 2025: 20 CVEs · rank #38Feb 2025: 26 CVEs · rank #32Mar 2025: 39 CVEs · rank #28Apr 2025: 28 CVEs · rank #33May 2025: 43 CVEs · rank #24Jun 2025: 42 CVEs · rank #24Jul 2025: 37 CVEs · rank #28Aug 2025: 26 CVEs · rank #33Sep 2025: 37 CVEs · rank #31Oct 2025: 37 CVEs · rank #29Nov 2025: 17 CVEs · rank #38Dec 2025: 30 CVEs · rank #35Jan 2026: 43 CVEs · rank #32Feb 2026: 48 CVEs · rank #30Mar 2026: 79 CVEs · rank #28Apr 2026: 77 CVEs · rank #27May 2026: 83 CVEs · rank #29Jun 2026: 112 CVEs · rank #24Jul 2026: 204 CVEs · rank #16Aug 2026: 177 CVEs · rank #21Sep 2026 so far: 188 CVEs · rank #17
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
- #4 in Jun 2002
- Busiest month
- Jul 2026, 204 CVEs
- First on the list
- Sep 1999
- On the top 50 list
- 234 of 325 monthly snapshots