PatchTheCEVCVE-2026-0297: A buffer overflow vulnerability exists in the Palo Alto Networks GlobalProtect™ app that enables a man-in-the-
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Routine
HIGH 8.1REMOTEUPGRADEUPGRADEUPGRADE
CVE-2026-0297 is a high-severity flaw (CVSS 8.1) affecting globalprotect, globalprotect, globalprotect. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A buffer overflow vulnerability exists in the Palo Alto Networks GlobalProtect™ app that enables a man-in-the-middle (MitM) attacker or a rogue gateway to disrupt system processes and potentially execute arbitrary code with elevated privileges (SYSTEM privileges on Windows, and root privileges on macOS and Linux).
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.1 (High) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 77%) |
| CISA exploited list | No |
| Weakness | CWE-787 |
| Published | 2026-08-13 |
| Last modified | 2026-10-23 |
Publisher (CNA): Palo Alto Networks, Inc. · Vendor: paloaltonetworks
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
paloaltonetworks globalprotect UPGRADE
Affected: >= 6.0.0 and < 6.0.15 · >= 6.3.0 and < 6.3.5
Fixed in: 6.0.15, 6.3.5
Safe to downgrade to: a release before 6.0.0
1. Check installed version
apt-cache policy globalprotect || rpm -q globalprotect || globalprotect --version
2. UPGRADE to 6.0.15 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade globalprotect
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade globalprotect
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 6.0.0 (Debian / Ubuntu)
apt-cache madison globalprotect
sudo apt install globalprotect=<VERSION_BEFORE_6.0.0>
sudo apt-mark hold globalprotect
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list globalprotect
sudo dnf downgrade globalprotect-<VERSION_BEFORE_6.0.0>
sudo dnf versionlock add globalprotect
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
paloaltonetworks globalprotect UPGRADE
Affected: >= 6.0.0 and < 6.0.15 · >= 6.3.0 and < 6.3.5
Fixed in: 6.0.15, 6.3.5
Safe to downgrade to: a release before 6.0.0
1. Check installed version
apt-cache policy globalprotect || rpm -q globalprotect || globalprotect --version
2. UPGRADE to 6.0.15 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade globalprotect
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade globalprotect
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 6.0.0 (Debian / Ubuntu)
apt-cache madison globalprotect
sudo apt install globalprotect=<VERSION_BEFORE_6.0.0>
sudo apt-mark hold globalprotect
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list globalprotect
sudo dnf downgrade globalprotect-<VERSION_BEFORE_6.0.0>
sudo dnf versionlock add globalprotect
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
paloaltonetworks globalprotect UPGRADE
Affected: >= 6.0.0 and < 6.0.15 · >= 6.3.0 and < 6.3.5
Fixed in: 6.0.15, 6.3.5
Safe to downgrade to: a release before 6.0.0
1. Check installed version
apt-cache policy globalprotect || rpm -q globalprotect || globalprotect --version
2. UPGRADE to 6.0.15 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade globalprotect
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade globalprotect
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 6.0.0 (Debian / Ubuntu)
apt-cache madison globalprotect
sudo apt install globalprotect=<VERSION_BEFORE_6.0.0>
sudo apt-mark hold globalprotect
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list globalprotect
sudo dnf downgrade globalprotect-<VERSION_BEFORE_6.0.0>
sudo dnf versionlock add globalprotect
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
paloaltonetworks globalprotect UPGRADE
Affected: >= 6.0.0 and < 6.0.15 · >= 6.2.0 and <= 6.2.9 · 6.3.3 · 6.3.3 h1 · 6.3.3 h2 · 6.3.3 h3
Fixed in: 6.0.15
Safe to downgrade to: a release before 6.0.0
1. Check installed version
apt-cache policy globalprotect || rpm -q globalprotect || globalprotect --version
2. UPGRADE to 6.0.15 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade globalprotect
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade globalprotect
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 6.0.0 (Debian / Ubuntu)
apt-cache madison globalprotect
sudo apt install globalprotect=<VERSION_BEFORE_6.0.0>
sudo apt-mark hold globalprotect
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list globalprotect
sudo dnf downgrade globalprotect-<VERSION_BEFORE_6.0.0>
sudo dnf versionlock add globalprotect
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
paloaltonetworks globalprotect UPGRADE
Affected: >= 6.0.0 and < 6.0.15 · >= 6.2.0 and < 6.2.8 · >= 6.3.0 and < 6.3.3 · 6.2.8 · 6.2.8 h1 · 6.2.8 h10 · 6.2.8 h11 · 6.2.8 h12
Fixed in: 6.0.15, 6.2.8, 6.3.3
Safe to downgrade to: a release before 6.0.0
1. Check installed version
apt-cache policy globalprotect || rpm -q globalprotect || globalprotect --version
2. UPGRADE to 6.0.15 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade globalprotect
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade globalprotect
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 6.0.0 (Debian / Ubuntu)
apt-cache madison globalprotect
sudo apt install globalprotect=<VERSION_BEFORE_6.0.0>
sudo apt-mark hold globalprotect
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list globalprotect
sudo dnf downgrade globalprotect-<VERSION_BEFORE_6.0.0>
sudo dnf versionlock add globalprotect
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
paloaltonetworks globalprotect UPGRADE
Affected: >= 6.0.0 and < 6.0.15 · >= 6.2.0 and < 6.2.8 · >= 6.3.0 and < 6.3.3 · 6.2.8 · 6.2.8 h10 · 6.2.8 h11 · 6.2.8 h12 · 6.2.8 h2
Fixed in: 6.0.15, 6.2.8, 6.3.3
Safe to downgrade to: a release before 6.0.0
1. Check installed version
apt-cache policy globalprotect || rpm -q globalprotect || globalprotect --version
2. UPGRADE to 6.0.15 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade globalprotect
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade globalprotect
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 6.0.0 (Debian / Ubuntu)
apt-cache madison globalprotect
sudo apt install globalprotect=<VERSION_BEFORE_6.0.0>
sudo apt-mark hold globalprotect
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list globalprotect
sudo dnf downgrade globalprotect-<VERSION_BEFORE_6.0.0>
sudo dnf versionlock add globalprotect
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Exact fixes by distribution
Fedora 46 · clementine · FIXED · 1.4.2-1.fc46 · FEDORA-2026-3e748ef4d3 · source
sudo dnf upgrade --advisory=FEDORA-2026-3e748ef4d3
Advisories and coverage
Official advisories
- Palo Alto Networks: CVE-2026-0297 GlobalProtect App: Buffer Overflow Vulnerability during UDP Tunnel Handshake (Severity: MEDIUM) 2026-09-12
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
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