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Vulnerabilities

Vulnerability · CVE-2015-1793

The X509_verify_cert function in crypto/x509/x509_vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values durin…

Published Jul 9, 2015 · catalog updated Jun 17, 2026 · supply chain products suite

Last checked Nov 9, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2015-1793 is not in CISA KEV. FIRST estimates a 58.21% chance of exploitation in the next 30 days. Check whether you run supply chain products suite.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
58.21%
Remediation
Advisory link
Affected products
cpe openssl/openssl · cpe oracle/jd edwards enterpriseone tools · cpe oracle/supply chain products suite

The X509_verify_cert function in crypto/x509/x509_vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values during identification of alternative certificate chains, which allows remote attackers to spoof a Certification Authority role and trigger unintended certificate verifications via a valid leaf certificate.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe openssl/openssl1.0.1n
  • cpe oracle/jd edwards enterpriseone tools9.1
  • cpe oracle/jd edwards enterpriseone tools9.2
  • cpe oracle/supply chain products suite6.1.2.2
  • cpe oracle/supply chain products suite6.1.3.0
  • cpe oracle/supply chain products suite6.2.0

How to fix CVE-2015-1793

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2015-1793 is not in CISA KEV. FIRST estimates a 58.21% chance of exploitation in the next 30 days. Check whether you run supply chain products suite.

Which versions are affected?

Compare what you have installed with oracle/jd edwards enterpriseone tools 9.1; oracle/jd edwards enterpriseone tools 9.2; oracle/supply chain products suite 6.1.2.2; oracle/supply chain products suite 6.1.3.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-254. EPSS 58.21%. There is no CISA KEV listing. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 9, 2015 · Monitored products — critical

    Detected

    The X509_verify_cert function in crypto/x509/x509_vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values during identification of alternative certificate chains, which allows remote attackers to spoof a Certification Authority role and trigger unintended certificate verifications via a valid leaf certificate.

  2. Jun 17, 2026 · Monitored products — critical

    Updated

    The X509_verify_cert function in crypto/x509/x509_vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values during identification of alternative certificate chains, which allows remote attackers to spoof a Certification Authority role and trigger unintended certificate verifications via a valid leaf certificate.

Sources

  • CVE.orgVulnerability recordCVE-2015-1793

    Official CVE identifier

    cve.org
  • Monitored products — criticalVendor advisoryCVE-2015-1793

    The X509_verify_cert function in crypto/x509/x509_vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values during identification of alternative certificate chains, which allows remote attackers to spoof a Certification Authority role and trigger unintended certificate verifications via a valid leaf certificate.

    nvd.nist.gov
  • Metasploit ModulesPublic exploit moduleauxiliary_server/openssl_altchainsforgery_mitm_proxy

    Public module reference (normal). Module source is not copied into this catalog.

    rapid7.com

References

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Metasploit ModulesNov 9, 2026
  • CVE.orgNov 4, 2026
  • Monitored products — criticalNov 4, 2026