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CISA KEV · ACTIVELY EXPLOITED
CRITICAL severity

CVE-2017-15944

CRITICAL

CVE-2017-15944 is a critical-severity (CVSS 9.8) Improper Input Validation vulnerability. It is in CISA's Known Exploited Vulnerabilities catalog (added 2022-08-18) — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.

Palo Alto Networks PAN-OS before 6.1.19, 7.0.x before 7.0.19, 7.1.x before 7.1.14, and 8.0.x before 8.0.6 allows remote attackers to execute arbitrary code via vectors involving the…

Published
Updated
Affected
1 product
Patched
See advisory
Exploits
10 known
Exploitation data as of Oct 22, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

  • Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2022-08-18. Federal agencies were required to remediate by 2022-09-08.
  • CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
  • A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2017-15944.

EPSS Exploitation Probability

via FIRST.org ↗
98.3%probability of exploitation in next 30 days
Very High Risk+0.04%
Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk
92.6%94.9%97.3%99.7%94.1%98.3%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2017-15944 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).

Where this sits among everything scored

Of 394,803 CVEs with a current EPSS score, this one falls in the ≥ 90% band (highlighted). Counts from FIRST.org, log-scaled.

Description

Palo Alto Networks PAN-OS before 6.1.19, 7.0.x before 7.0.19, 7.1.x before 7.1.14, and 8.0.x before 8.0.6 allows remote attackers to execute arbitrary code via vectors involving the management interface.

Affected Products

1 product · 4 configurations
OS
pan-ospaloaltonetworks
≥ 8.0.0 && < 8.0.6
range
Exploits & PoCs
10

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-44597remoteunix✓ Verified

Palo Alto Networks - 'readSessionVarsFromFile()' Session Corruption (Metasploit)

by Metasploit · May 8, 2018

EDB-43342remotehardware✓ Verified

Palo Alto Networks Firewalls - Root Remote Code Execution

by Philip Pettersson · Dec 14, 2017

Detection & mitigation playbook

Vulnerability
  1. Detect

    Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

  2. Remediation status

    No fixed release is recorded for CVE-2017-15944 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.

  3. Mitigate without a patch

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How to detect CVE-2017-15944

A community-maintained Nuclei template exists for this CVE. You can scan for it directly:

nuclei -id cve-2017-15944 -u https://target
Template
Palo Alto Network PAN-OS - Remote Code Execution
Severity
critical
Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
Remediation
Apply the latest security patches and updates provided by Palo Alto Networks.

Template by ProjectDiscovery nuclei-templates (emadshanab, milo2012), MIT licensed. View the full template. Scan only systems you are authorised to test.

Frequently Asked Questions

Palo Alto Networks PAN-OS before 6.1.19, 7.0.x before 7.0.19, 7.1.x before 7.1.14, and 8.0.x before 8.0.6 allows remote attackers to execute arbitrary code via vectors involving the management interface.
O3 Security · Impact-Aware SCA

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CVE-2017-15944: Critical 9.8 (KEV)