{
    "id": "CVE-2015-1793",
    "published": "2015-07-09 19:17:00",
    "last_modified": "2026-06-17 00:23:00",
    "cvss_score": "6.5",
    "cvss_severity": "MEDIUM",
    "cvss_version": "3.0",
    "cvss_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
    "cwe": "CWE-254",
    "description": "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.",
    "epss_score": "0.62394",
    "epss_percentile": "0.99161",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:20:01",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "openssl",
            "product": "openssl"
        },
        {
            "vendor": "oracle",
            "product": "jd_edwards_enterpriseone_tools"
        },
        {
            "vendor": "oracle",
            "product": "opus_10g_ethernet_switch_family"
        },
        {
            "vendor": "oracle",
            "product": "supply_chain_products_suite"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "38640",
            "title": "OpenSSL - Alternative Chains Certificate Forgery",
            "date": "2015-11-05",
            "url": "https://www.exploit-db.com/exploits/38640"
        }
    ],
    "refs_list": [
        "http://fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery",
        "http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc",
        "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694",
        "http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161747.html",
        "http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161782.html",
        "http://marc.info/?l=bugtraq&m=143880121627664&w=2",
        "http://marc.info/?l=bugtraq&m=144370846326989&w=2",
        "http://openssl.org/news/secadv_20150709.txt",
        "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150710-openssl",
        "http://www.fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery",
        "http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html",
        "http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html",
        "http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html",
        "http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html",
        "http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html",
        "http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html",
        "http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html",
        "http://www.securityfocus.com/bid/75652",
        "http://www.securityfocus.com/bid/91787",
        "http://www.securitytracker.com/id/1032817",
        "http://www.slackware.com/security/viewer.php?l=slackware-security&y=2015&m=slackware-security.561427",
        "http://www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-454058.htm",
        "https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=9a0db453ba017ebcaccbee933ee6511a9ae4d1c8",
        "https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04822825",
        "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05045763"
    ]
}