{"id":"CVE-2021-21702","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-21702","generatedAt":"2026-10-27T21:18:59.602Z","title":"In PHP versions 7.3.x below 7.3.27, 7.4.x below 7.4.15 and 8.0.x below 8.0.2, when using SOAP extension to connect to a SOAP server, a malicious SOAP server could return malformed XML data as a response that would cause PHP to access a null pointer and…","description":"In PHP versions 7.3.x below 7.3.27, 7.4.x below 7.4.15 and 8.0.x below 8.0.2, when using SOAP extension to connect to a SOAP server, a malicious SOAP server could return malformed XML data as a response that would cause PHP to access a null pointer and thus cause a crash.","published":"2021-02-15T04:15:13.000Z","lastModified":"2026-06-17T03:36:01.000Z","status":"Modified","sourceIdentifier":"security@php.net","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-476"],"affected":["php/php","debian/debian linux","netapp/clustered data ontap","oracle/communications diameter signaling router"],"epss":{"score":0.03152,"percentile":0.87865,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (3.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://bugs.php.net/bug.php?id=80672","tags":["Issue Tracking","Vendor Advisory"],"source":"security@php.net"},{"url":"https://lists.debian.org/debian-lts-announce/2021/07/msg00008.html","tags":["Mailing List","Third Party Advisory"],"source":"security@php.net"},{"url":"https://security.gentoo.org/glsa/202105-23","tags":["Third Party Advisory"],"source":"security@php.net"},{"url":"https://security.netapp.com/advisory/ntap-20210312-0005/","tags":["Third Party Advisory"],"source":"security@php.net"},{"url":"https://www.debian.org/security/2021/dsa-4856","tags":["Third Party Advisory"],"source":"security@php.net"},{"url":"https://www.oracle.com/security-alerts/cpuoct2021.html","tags":["Patch","Third Party Advisory"],"source":"security@php.net"},{"url":"https://www.tenable.com/security/tns-2021-14","tags":["Third Party Advisory"],"source":"security@php.net"},{"url":"https://bugs.php.net/bug.php?id=80672","tags":["Issue Tracking","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2021/07/msg00008.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202105-23","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20210312-0005/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2021/dsa-4856","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpuoct2021.html","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.tenable.com/security/tns-2021-14","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-21702","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}