CVE-2019-9020

Exp

An issue was discovered in PHP before 5.6.40, 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before 7.3.1. Invalid input to the function xmlrpc_decode() can lead to an invalid memory access (heap out of bounds read or read after free). This is related to xml_elem_parse_buf in ext/xmlrpc/libxmlrpc/xml_element.c.

Published: 2019-02-22 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-9020 is rated High Exploit Risk (87.7/100): CVSS Critical severity, with high exploitation likelihood (EPSS 10.06%, 95th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2019-9020

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2019-9020

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-27 9.79% 10.06% +0.27%
2 2026-06-15 2.39% 9.79% +7.40%
3 2026-03-18 — 2.39% —

Full EPSS history (53 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-9020

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2019-9020

OS Trackers for CVE-2019-9020

vendor priority summary link
alpine critical CVE-2019-9020: 1 source package rows (php7); 1 state rows across 1 repos (edge-community); fixed 1, open 0. https://security.alpinelinux.org/vuln/CVE-2019-9020
redhat medium — https://access.redhat.com/security/cve/CVE-2019-9020
suse medium CVE-2019-9020 severity moderate: SUSE including 956 source package names (apache2-mod_php5-5.2.14-111.46.1, apache2-mod_php5-5.5.14-109.51.6, …), 1942 product×package rows across 54 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (54 product lines)): Fixed 1588, Known Not Affected 354. https://www.suse.com/security/cve/CVE-2019-9020/
ubuntu medium CVE-2019-9020 medium priority: Ubuntu including 4 source packages (php5, php7.0, php7.2, php7.3), 20 status rows across 5 suites (bionic, cosmic, trusty, upstream, xenial): DNE 12, released 6, needs-triage 2. https://ubuntu.com/security/CVE-2019-9020

Affected software / configurations for CVE-2019-9020

Vendor Product Version Raw CPE
php php < 5.6.40 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
php php >= 7.0.0, < 7.1.26 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
php php >= 7.2.0, < 7.2.14 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
php php >= 7.3.0, < 7.3.1 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
netapp storage_automation_store — cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:*
opensuse leap 42.3 cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*

References for CVE-2019-9020

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00083.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00104.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html
http://www.securityfocus.com/bid/107156 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2019:2519
https://access.redhat.com/errata/RHSA-2019:3299
https://bugs.php.net/bug.php?id=77242 Exploit Issue Tracking Patch Vendor Advisory
https://bugs.php.net/bug.php?id=77249 Exploit Issue Tracking Vendor Advisory
https://security.netapp.com/advisory/ntap-20190321-0001/ Third Party Advisory
https://usn.ubuntu.com/3902-1/ Third Party Advisory
https://usn.ubuntu.com/3902-2/ Third Party Advisory
https://www.debian.org/security/2019/dsa-4398 Third Party Advisory
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