CVE-2017-9841

CRITICAL
9.8
CVSS Score
Published: June 27, 2017 at 05:00 PM UTC
Updated: June 17, 2026 at 01:29 AM UTC
2 products affected across 2 vendorsCommunications Diameter Signaling RouterPhpunit

Using N/A by N/A?

Get instant alerts when new vulnerabilities affect N/A - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
CRITICAL9.8
Exploitation
CISA KEV
Exploit prediction
EPSS 100%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score100.0%

EPSS (Exploit Prediction Scoring System) estimates a 100.0% chance this CVE is exploited in the wild within the next 30 days — higher than 100% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

PHPUnit allows remote attackers to execute arbitrary PHP code via HTTP POST data beginning with a "<?php " substring, as demonstrated by an attack on a site with an exposed /vendor folder, i.e., external access to the /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php URI.

Required Action
Apply updates per vendor instructions.
Ransomware Use
Unknown
Added to KEV
Feb 15, 2022
Remediation Due
Aug 15, 2022
1534 days overdue

Description

Util/PHP/eval-stdin.php in PHPUnit before 4.8.28 and 5.x before 5.6.3 allows remote attackers to execute arbitrary PHP code via HTTP POST data beginning with a "<?php " substring, as demonstrated by an attack on a site with an exposed /vendor folder, i.e., external access to the /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php URI.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 4.8.275.0.0 ≤ v < 5.6.3
Affected range stops below 5.6.3, so it looks safe — our inference, not a vendor statement

References (8)

VDB Entryx_refsource_BIDBroken Link
http://www.securityfocus.com/bid/101798
VDB Entryx_refsource_SECTRACKBroken Link
http://www.securitytracker.com/id/1039812
x_refsource_MISCPatchThird Party Advisory
https://github.com/sebastianbergmann/phpunit/pull/1956
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
https://security.gentoo.org/glsa/201711-15
x_refsource_MISCPatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-9841

SSVC — Action Prioritization

SSVCActiveAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.8CRITICALCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-94

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card