Vulnerability Details : CVE-2021-21702

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 2021-02-15 04:15:13
Updated 2021-12-10 17:58:27
Source PHP Group
View at NVD,   CVE.org

Threat overview for CVE-2021-21702

Top countries where our scanners detected CVE-2021-21702
Top open port discovered on systems with this issue 80
IPs affected by CVE-2021-21702 131,933
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2021-21702!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2021-21702

Probability of exploitation activity in the next 30 days: 1.23%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 85 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2021-21702

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
5.0
 MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
 NIST
7.5
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
 NIST
5.3
 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.9
1.4
 PHP Group

CWE ids for CVE-2021-21702

  • A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
    Assigned by:
    • nvd@nist.gov (Primary)
    • security@php.net (Secondary)

References for CVE-2021-21702

Products affected by CVE-2021-21702

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