CVE-2021-21702
Null Dereference in SoapClient
HIGH
7.5
CVSS Score
Published: February 15, 2021 at 04:10 AM UTC
Updated: June 17, 2026 at 03:36 AM UTC
4 products affected across 4 vendorsDebian LinuxPHPClustered Data ONTAP
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Severity
HIGH7.5
Exploit prediction
EPSS 3%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%All versions
8.0.0 ≤ v ≤ 8.5.0
7.3.0 ≤ v < 7.3.277.3.x ≤ v < 7.3.277.4.0 ≤ v < 7.4.157.4.x ≤ v < 7.4.158.0.0 ≤ v < 8.0.28.0.X ≤ v < 8.0.27.3.x7.4.x8.0.X
Affected range stops below 7.3.27, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.4.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.0.2, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (7)
x_refsource_MISCIssue TrackingVendor Advisory
Source: [email protected]
https://bugs.php.net/bug.php?id=80672Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/07/msg00008.htmlVendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202105-23x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20210312-0005/Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2021/dsa-4856x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpuoct2021.htmlx_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://www.tenable.com/security/tns-2021-14CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-476
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