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Fencer Vulns
high 7.2

CVE-2001-0506 in the critical feed json

Buffer overflow in ssinc.dll in IIS 5.0 and 4.0 allows local users to gain system privileges via a Server-Side Includes (SSI) directive for…

published 2001-09-20 25 y ago modified 2026-06-16 4 mo ago also EUVD-2001-0502

cvss
7.2
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
68.9%
EPSS 68.9% chance of exploitation in 30 days, percentile 99.3%
public exploits
1
Exploit-DB

Summary

Buffer overflow in ssinc.dll in IIS 5.0 and 4.0 allows local users to gain system privileges via a Server-Side Includes (SSI) directive for a long filename, which triggers the overflow when the directory name is added, aka the "SSI privilege elevation" vulnerability.

Patch / fix

Timeline

  1. First public exploit (EDB-21071)
  2. Published

Exploit prediction

68.93% chance of exploitation in the next 30 days, higher than 99.3% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-21071 Microsoft IIS 4.0/5.0 - SSI Buffer Overrun Privilege Escalation local, 2001-08-15
  • securityfocus.com http://www.securityfocus.com/bid/3190 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

References

Sources

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.