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CVE-2009-0789

MEDIUM · CVSS 5.0EPSS 2.6%EU EUVD

OpenSSL before 0.9.8k on WIN64 and certain other platforms does not properly handle a malformed ASN.1 structure, which allows remote attackers to cause a denial of service (invalid memory access and application crash) by placing this structure in the public key of a certificate, as demonstrated by an RSA public key.

Key facts

CVSS score
5.0 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness (CWE)
CWE-189
EPSS score
2.6% (85th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2009-0787)
Published
March 27, 2009
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-0787 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

  • openssl / openssl
  • openssl / openssl
  • openssl / openssl
  • openssl / openssl
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  • openssl / openssl
  • openssl / openssl
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  • openssl / openssl
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  • openssl / openssl
  • openssl / openssl
  • openssl / openssl
  • openssl / openssl
  • openssl / openssl

and 12 more…

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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