CVE Tools
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May 2001

292 CVEs published, 6.5× April 2001 and 24.3× May 2000. CISA added 0 to KEV.

2001 month by month

2001, month by month. Point at another month to read it.
2001: CVEs published per month
YearJanFebMarAprMayJunJulAugSepOctNovDecYear total
2001January 2001: 232 CVEsFebruary 2001: 61 CVEsMarch 2001: 39 CVEsApril 2001: 45 CVEsMay 2001: 292 CVEsJune 2001: 0 CVEsJuly 2001: 61 CVEsAugust 2001: 25 CVEsSeptember 2001: 490 CVEsOctober 2001: 45 CVEsNovember 2001: 36 CVEsDecember 2001: 0 CVEs1,326−10%
Critical
4515% of the 292 with a CVSS score
Added to CISA KEV
0None of this month's own CVEs is in KEV yet
Vendors
156230 products
Top weakness
Buffer OverflowCWE-120 · 2 CVEs

Who drove it

Vendors by distinct CVEs this month, with how many of those CVEs are now in CISA KEV and how far each moved in the ranking.

  1. 1MicrosoftInternet Explorer, Windows 2000, Windows Nt342nonenew
  2. 2Red HatLinux, Red Hat Enterprise Linux, Tmpwatch272nonenew
  3. 3MandrakesoftMandrake Linux, Mandrake Linux Corporate Server170nonenew
  4. 4DebianDebian Linux151nonenew
  5. 5FreebsdFreebsd, Ja-xklock131nonenew
  6. 6SunSunos, Solaris, Javaserver Web Dev Kit130nonenew
  7. 7IBMAix, Net.commerce, Net.commerce Hosting Server120nonenew
  8. 8HPHp-ux, Mpe Ix, Omniback Ii113nonenew
  9. 9ImmunixImmunix110nonenew
  10. 10CiscoBroadband Operating System, Cisco 6xx Routers, IOS80nonenew
  11. 11OpenBSDOpenBSD, Openssh84nonenew
  12. 12NetbsdNetbsd62nonenew
  13. 13OracleOracle8i, Application Server, Solaris62nonenew
  14. 14ScoUnixware, Openserver, Open Desktop63nonenew
  15. 15AllaireColdfusion Server, Forums, Spectra51nonenew
  16. 16NetscapeFasttrack Server, Enterprise Server, Smartdownload52nonenew
  17. 17GnuPrivacy Guard, Groff, Mailman41nonenew
  18. 18ISCBind43nonenew
  19. 19KthKth Kerberos40nonenew
  20. 20SuseSuse Linux40nonenew
  21. 21ConectivaLinux30nonenew
  22. 22DigitalUnix30nonenew
  23. 23LotusDomino Mail Server, Domino R5 Client, Domino R5 Server31nonenew
  24. 24SgiIrix33nonenew
  25. 25SiemensReliant Unix, Hinet Lp31nonenew

Severity

How this month's CVEs score on CVSS. Severity is not exploitation.

  • Critical4515%
  • High9031%
  • Medium11238%
  • Low4515%

Breakouts

Vendors with at least three times their own 12-month median.

  1. Microsoft3417.0×
  2. Sun1313.0×
  3. Debian157.5×
  4. IBM126.0×
  5. Oracle66.0×
  6. HP115.5×
  7. Mandrakesoft174.3×
  8. ISC44.0×
  9. Cisco84.0×
  10. OpenBSD84.0×

New in the top 100

Not in the top 100 in any of the 24 months before.

  1. Immunix11#9
  2. Kth4#19
  3. Trustix3#27
  4. Brian Stanback2#28
  5. Brs2#29
  6. Dcscripts2#31
  7. GENE62#32
  8. Macromedia2#34
  9. Sierra2#39
  10. Software6022#41

What kind of weakness

Weakness classes (CWE) by distinct CVEs, with how far each moved in the ranking.

  1. CWE-120Buffer Overflow2new
  2. CWE-131Incorrect Buffer Size2new
  3. CWE-200Information Exposure2new
  4. CWE-119Memory Buffer Bounds1new
  5. CWE-22Path Traversal1new
  6. CWE-2811new
  7. CWE-307Excessive Auth Attempts1new
  8. CWE-3991new
  9. CWE-732Incorrect Permissions1new
  10. CWE-881new

Where it landed

The month's CVEs by the sector of the software they affect. A CVE that touches several sectors counts in each.

Area is CVEs this month. Point at a sector to read it.

Which weakness, where

The top weakness classes against the vendors and the sectors that carried them.

Snapshot v1, computed Jun 11, 2026, 06:04 UTC. MethodologyAll months on record

Nuclei coverage and the detection gap are held back while the template mirror is repaired.

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