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Vulnerability record · CVE-2007-4903 · published 17 September 2007

CVE-2007-4903: Ultra shareware ultra crypto component memory buffer overflow vulnerability

UUltra Shareware · Ultra Crypto Component

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.

7.5 CVSS 2.0 High EPSS 9.4% · top 4.8% CWE-119 · Memory buffer overflow
7.5CVSS 2.0 base score
9.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://osvdb.org/38979
http://www.securityfocus.com/bid/25609 Exploit
http://www.securitytracker.com/id?1018674
https://exchange.xforce.ibmcloud.com/vulnerabilities/36524
https://www.exploit-db.com/exploits/4389
http://osvdb.org/38979
http://www.securityfocus.com/bid/25609 Exploit
http://www.securitytracker.com/id?1018674
https://exchange.xforce.ibmcloud.com/vulnerabilities/36524
https://www.exploit-db.com/exploits/4389

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2007-4903), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.