CVE-2019-9025

Exp

An issue was discovered in PHP 7.3.x before 7.3.1. An invalid multibyte string supplied as an argument to the mb_split() function in ext/mbstring/php_mbregex.c can cause PHP to execute memcpy() with a negative argument, which could read and write past buffers allocated for the data.

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-2019-9025 is rated High Exploit Risk (84.4/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 3.06%). 1 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-2019-9025

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

Exploit prediction scoring system (EPSS) score for CVE-2019-9025

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 2.97% 3.06% +0.08%
2 2026-06-15 1.71% 2.97% +1.26%
3 2026-03-04 — 1.71% —

Full EPSS history (45 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-9025

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-2019-9025

OS Trackers for CVE-2019-9025

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2019-9025
suse medium CVE-2019-9025 severity moderate: SUSE including 154 source package names (apache2-mod_php5, apache2-mod_php53, …), 211 product×package rows across 8 product lines (SLES for SAP Applications 11 SP3, SUSE Linux Enterprise Module for Web and Scripting 12, … (8 product lines)): Known Not Affected 211. https://www.suse.com/security/cve/CVE-2019-9025/
ubuntu medium CVE-2019-9025 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, not-affected 4, needs-triage 3, released 1. https://ubuntu.com/security/CVE-2019-9025

Affected software / configurations for CVE-2019-9025

Vendor Product Version Raw CPE
php php >= 7.3.0, < 7.3.1 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
netapp storage_automation_store — cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:*

References for CVE-2019-9025

URL Tags
https://bugs.php.net/bug.php?id=77367 Exploit Issue Tracking Patch Vendor Advisory
https://security.netapp.com/advisory/ntap-20190321-0001/ Third Party Advisory
cvelogic Threat Intelligence