CVE-2015-4598

PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 does not ensure that pathnames lack %00 sequences, which might allow remote attackers to read or write to arbitrary files via crafted input to an application that calls (1) a DOMDocument save method or (2) the GD imagepsloadfont function, as demonstrated by a filename\0.html attack that bypasses an intended configuration in which client users may write to only .html files.

Published: 2016-05-16 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-4598 is rated Moderate Risk (57.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.92%). Review affected assets and schedule remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2015-4598

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 2026-06-26 3.84% 3.92% +0.07%
2 2026-06-15 0.68% 3.84% +3.17%
3 2026-05-24 — 0.68% —

Full EPSS history (20 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-4598

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N 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:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 2.5 [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-2015-4598

OS Trackers for CVE-2015-4598

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2015-4598
ubuntu low CVE-2015-4598 low priority: Ubuntu including 1 source packages (php5), 5 status rows across 5 suites (precise, trusty, upstream, utopic, vivid): released 5. https://ubuntu.com/security/CVE-2015-4598

Affected software / configurations for CVE-2015-4598

Vendor Product Version Raw CPE
redhat enterprise_linux_desktop 7.0 cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_hpc_node 7.0 cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_hpc_node_eus 7.1 cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.1:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.0 cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server_eus 7.1 cpe:2.3:o:redhat:enterprise_linux_server_eus:7.1:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 7.0 cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
php php <= 5.4.41 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
php php 5.5.0 cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:*
php php 5.5.1 cpe:2.3:a:php:php:5.5.1:*:*:*:*:*:*:*
php php 5.5.2 cpe:2.3:a:php:php:5.5.2:*:*:*:*:*:*:*
php php 5.5.3 cpe:2.3:a:php:php:5.5.3:*:*:*:*:*:*:*
php php 5.5.4 cpe:2.3:a:php:php:5.5.4:*:*:*:*:*:*:*
php php 5.5.5 cpe:2.3:a:php:php:5.5.5:*:*:*:*:*:*:*
php php 5.5.6 cpe:2.3:a:php:php:5.5.6:*:*:*:*:*:*:*
php php 5.5.7 cpe:2.3:a:php:php:5.5.7:*:*:*:*:*:*:*
php php 5.5.8 cpe:2.3:a:php:php:5.5.8:*:*:*:*:*:*:*
php php 5.5.9 cpe:2.3:a:php:php:5.5.9:*:*:*:*:*:*:*
php php 5.5.10 cpe:2.3:a:php:php:5.5.10:*:*:*:*:*:*:*
php php 5.5.11 cpe:2.3:a:php:php:5.5.11:*:*:*:*:*:*:*
php php 5.5.12 cpe:2.3:a:php:php:5.5.12:*:*:*:*:*:*:*
php php 5.5.13 cpe:2.3:a:php:php:5.5.13:*:*:*:*:*:*:*
php php 5.5.14 cpe:2.3:a:php:php:5.5.14:*:*:*:*:*:*:*
php php 5.5.15 cpe:2.3:a:php:php:5.5.15:*:*:*:*:*:*:*
php php 5.5.16 cpe:2.3:a:php:php:5.5.16:*:*:*:*:*:*:*
php php 5.5.17 cpe:2.3:a:php:php:5.5.17:*:*:*:*:*:*:*
php php 5.5.18 cpe:2.3:a:php:php:5.5.18:*:*:*:*:*:*:*
php php 5.5.19 cpe:2.3:a:php:php:5.5.19:*:*:*:*:*:*:*
php php 5.5.20 cpe:2.3:a:php:php:5.5.20:*:*:*:*:*:*:*
php php 5.5.21 cpe:2.3:a:php:php:5.5.21:*:*:*:*:*:*:*
php php 5.5.22 cpe:2.3:a:php:php:5.5.22:*:*:*:*:*:*:*
php php 5.5.23 cpe:2.3:a:php:php:5.5.23:*:*:*:*:*:*:*
php php 5.5.24 cpe:2.3:a:php:php:5.5.24:*:*:*:*:*:*:*
php php 5.5.25 cpe:2.3:a:php:php:5.5.25:*:*:*:*:*:*:*
php php 5.6.0 cpe:2.3:a:php:php:5.6.0:*:*:*:*:*:*:*
php php 5.6.1 cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:*
php php 5.6.2 cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:*
php php 5.6.3 cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:*
php php 5.6.4 cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:*
php php 5.6.5 cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:*
php php 5.6.6 cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:*
php php 5.6.7 cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:*
php php 5.6.8 cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:*
php php 5.6.9 cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:*
redhat enterprise_linux 6.0 cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
redhat enterprise_linux 7.0 cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

References for CVE-2015-4598

cvelogic Threat Intelligence