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Fencer Vulns
high 7.5

CVE-2007-4903 json

Multiple buffer overflows in a certain ActiveX control in CryptoX.dll 2.0 and earlier in the Ultra Crypto Component allow remote attackers…

published 2007-09-17 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-4884

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
9.4%
EPSS 9.4% chance of exploitation in 30 days, percentile 95%
public exploits
1
Exploit-DB

Summary

Multiple buffer overflows in a certain ActiveX control in CryptoX.dll 2.0 and earlier in the Ultra Crypto Component allow remote attackers to execute arbitrary code via (1) a long string in the first argument to the AcquireContext method or (2) an unspecified vector to the DeleteContext method.

Timeline

  1. First public exploit (EDB-4389)
  2. Published

Exploit prediction

9.39% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-4389 Ultra Crypto Component - 'CryptoX.dll 2.0' Remote Buffer Overflow remote, 2007-09-10
  • securityfocus.com http://www.securityfocus.com/bid/25609 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.