CVE-2000-0258 in the critical feed json
IIS 4.0 and 5.0 allows remote attackers to cause a denial of service by sending many URLs with a large number of escaped characters, aka th…
published 2000-04-12 26 y ago modified 2026-06-16 4 mo ago also EUVD-2000-0257
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 19.5%
- EPSS 19.5% chance of exploitation in 30 days, percentile 97%
- public exploits
- 0
- none known
Summary
IIS 4.0 and 5.0 allows remote attackers to cause a denial of service by sending many URLs with a large number of escaped characters, aka the "Myriad Escaped Characters" Vulnerability.
Exploit prediction
19.46% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
docs.microsoft.com
/en-us/security-updates/securitybulletins/2000/ms00-023
vendor-advisory
-
securityfocus.com
/bid/1101
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2000-0258
- NVD CVE-2000-0258
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.