7.5

CVE-2021-21702: Null Dereference in SoapClient

Modified
AliasesMGASA-2021-0076SUSE-SU-2021:0494-1SUSE-SU-2021:0498-1
Published 15-02-2021Last modified 16-09-2024

Vulnerability summary

CVE-2021-21702 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 3.15% chance of exploitation in the next 30 days, higher than 87.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
3.15%
0%100%
Low · -0.03 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 10 · Related 6
DLA-2708-1DSA-4856-1OPENSUSE-SU-2024:11569-1RHSA-2021:2992RHSA-2021:4213SUSE-SU-2022:4067-1

Timeline

  1. 15-02-2021
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

3.15%

Chance of exploitation in the next 30 days

Percentile

88%

Versus all other CVEs

30-day change

Decrease -0.03 pp

From 3.18% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse21 products
  • php53&distro=SUSE Linux Enterprise Point of Sale 11 SP3< 5.3.17-112.99.2
  • php53&distro=SUSE Linux Enterprise Server 11 SP4-LTSS< 5.3.17-112.99.2
  • php72&distro=SUSE Linux Enterprise Module for Web and Scripting 12< 7.2.5-1.60.1
  • php72&distro=SUSE Linux Enterprise Software Development Kit 12 SP5< 7.2.5-1.60.1
  • php74&distro=SUSE Linux Enterprise Module for Web and Scripting 12< 7.4.6-1.19.1
Ubuntu4 products
  • php5< 5.5.9+dfsg-1ubuntu4.29+esm14
  • php7.0< 7.0.33-0ubuntu0.16.04.16+esm1
  • php7.2< 7.2.24-0ubuntu0.18.04.8
  • php7.4< 7.4.3-4ubuntu2.5
Alpine2 products
  • php7< 7.3.27-r0 | < 7.4.15-r0
  • php8< 8.0.2-r0
Debian2 products
Opensuse2 products
  • php7-test&distro=openSUSE Leap 15.2< 7.4.6-lp152.2.15.1
  • php7&distro=openSUSE Leap 15.2< 7.4.6-lp152.2.15.1
Mageia1 product
  • php< 7.3.27-1.mga7
Netapp1 product
Oracle1 product
Php1 product
  • php≥ 7.3.0, < 7.3.27 | ≥ 7.4.0, < 7.4.15 | ≥ 8.0.0, < 8.0.2
Php group1 product
  • php≥ 7.3.x, < 7.3.27 | ≥ 7.4.x, < 7.4.15 | ≥ 8.0.X, < 8.0.2

10 vendors · 36 products

References

25 links
Show all 25 references