CVE-2026-0250 [Medium] | Out-of-bounds Write in Globalprotect App

A buffer overflow vulnerability exists in the Palo Alto Networks GlobalProtect™ app that enables a man in the middle attacker to disrupt system processes and potentially execute arbitrary code with SYSTEM privileges. This vulnerability is triggered during the processing of requests and responses exchanged between Portal and Gateway. The GlobalProtect app on iOS is not affected.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.01%	0.21%	+0.20%
2	2026-05-14	—	0.01%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.01%

0.21%

+0.20%

2026-05-14

—

0.01%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.2	4.0	MEDIUM	`CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:M/U:Amber` Click to expand Attack vector (AV:A) Attacker has to be on an adjacent/local network segment. Attack complexity (AC:L) Exploitation conditions are straightforward and stable. Attack requirements (AT:P) Additional preconditions must be present for exploitation. Privileges required (PR:N) No privileges are required. User interaction (UI:N) No user interaction is required. Vulnerable system confidentiality impact (VC:H) High confidentiality impact on the vulnerable system. Vulnerable system integrity impact (VI:H) High integrity impact on the vulnerable system. Vulnerable system availability impact (VA:H) High availability impact on the vulnerable system. Subsequent system confidentiality impact (SC:N) No confidentiality impact on subsequent systems. Subsequent system integrity impact (SI:N) No integrity impact on subsequent systems. Subsequent system availability impact (SA:N) No availability impact on subsequent systems. Exploit maturity (threat) (E:U) Unreported: no public PoC, no reported exploitation, and no known simplification tools. Confidentiality requirement (CR:X) Not defined: insufficient information; scoring treats this like High (worst case). Integrity requirement (IR:X) Not defined: insufficient information; scoring treats this like High (worst case). Availability requirement (AR:X) Not defined: insufficient information; scoring treats this like High (worst case). Modified attack vector (MAV:X) Not defined: scoring uses the Base Attack Vector (AV). Modified attack complexity (MAC:X) Not defined: scoring uses the Base Attack Complexity (AC). Modified attack requirements (MAT:X) Not defined: scoring uses the Base Attack Requirements (AT). Modified privileges required (MPR:X) Not defined: scoring uses the Base Privileges Required (PR). Modified user interaction (MUI:X) Not defined: scoring uses the Base User Interaction (UI). Modified vulnerable system confidentiality impact (MVC:X) Not defined: scoring uses the Base VC metric. Modified vulnerable system integrity impact (MVI:X) Not defined: scoring uses the Base VI metric. Modified vulnerable system availability impact (MVA:X) Not defined: scoring uses the Base VA metric. Modified subsequent system confidentiality impact (MSC:X) Not defined: scoring uses the Base SC metric. Modified subsequent system integrity impact (MSI:X) Not defined: scoring uses the Base SI metric. Modified subsequent system availability impact (MSA:X) Not defined: scoring uses the Base SA metric. Safety (supplemental) (S:X) Not evaluated. Automatable (supplemental) (AU:N) No: attackers cannot reliably automate reconnaissance through exploitation for this issue. Recovery (supplemental) (R:U) User: manual user intervention is needed to recover services. Value density (supplemental) (V:D) Diffuse: a single exploit event controls relatively limited resources (e.g., one client). Vulnerability response effort (supplemental) (RE:M) Moderate effort (remote update, disable subsystem, simple upgrade with minor service impact). Provider urgency (supplemental) (U:AMBER) Amber: provider rates moderate urgency.	—	—	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.2

4.0

MEDIUM

CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:M/U:Amber

Click to expand

Attack vector (AV:A): Attacker has to be on an adjacent/local network segment.
Attack complexity (AC:L): Exploitation conditions are straightforward and stable.
Attack requirements (AT:P): Additional preconditions must be present for exploitation.
Privileges required (PR:N): No privileges are required.
User interaction (UI:N): No user interaction is required.
Vulnerable system confidentiality impact (VC:H): High confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:H): High integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:H): High availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N): No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N): No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N): No availability impact on subsequent systems.
Exploit maturity (threat) (E:U): Unreported: no public PoC, no reported exploitation, and no known simplification tools.
Confidentiality requirement (CR:X): Not defined: insufficient information; scoring treats this like High (worst case).
Integrity requirement (IR:X): Not defined: insufficient information; scoring treats this like High (worst case).
Availability requirement (AR:X): Not defined: insufficient information; scoring treats this like High (worst case).
Modified attack vector (MAV:X): Not defined: scoring uses the Base Attack Vector (AV).
Modified attack complexity (MAC:X): Not defined: scoring uses the Base Attack Complexity (AC).
Modified attack requirements (MAT:X): Not defined: scoring uses the Base Attack Requirements (AT).
Modified privileges required (MPR:X): Not defined: scoring uses the Base Privileges Required (PR).
Modified user interaction (MUI:X): Not defined: scoring uses the Base User Interaction (UI).
Modified vulnerable system confidentiality impact (MVC:X): Not defined: scoring uses the Base VC metric.
Modified vulnerable system integrity impact (MVI:X): Not defined: scoring uses the Base VI metric.
Modified vulnerable system availability impact (MVA:X): Not defined: scoring uses the Base VA metric.
Modified subsequent system confidentiality impact (MSC:X): Not defined: scoring uses the Base SC metric.
Modified subsequent system integrity impact (MSI:X): Not defined: scoring uses the Base SI metric.
Modified subsequent system availability impact (MSA:X): Not defined: scoring uses the Base SA metric.
Safety (supplemental) (S:X): Not evaluated.
Automatable (supplemental) (AU:N): No: attackers cannot reliably automate reconnaissance through exploitation for this issue.
Recovery (supplemental) (R:U): User: manual user intervention is needed to recover services.
Value density (supplemental) (V:D): Diffuse: a single exploit event controls relatively limited resources (e.g., one client).
Vulnerability response effort (supplemental) (RE:M): Moderate effort (remote update, disable subsystem, simple upgrade with minor service impact).
Provider urgency (supplemental) (U:AMBER): Amber: provider rates moderate urgency.

—

[email protected]

Affected software / configurations for CVE-2026-0250

Vendor	Product	Version	Raw CPE
palo_alto_networks	globalprotect_app	>= 6.3.0, < 6.3.3-h9_6.3.3-999_	cpe:2.3:a:palo_alto_networks:globalprotect_app:::windows:::::*
palo_alto_networks	globalprotect_app	>= 6.3.0, < 6.3.3-h9_6.3.3-999_	cpe:2.3:a:palo_alto_networks:globalprotect_app:::macos:::::*
palo_alto_networks	globalprotect_app	>= 6.2.0, < 6.2.8-h10_6.2.8-948_	cpe:2.3:a:palo_alto_networks:globalprotect_app:::windows:::::*
palo_alto_networks	globalprotect_app	>= 6.2.0, < 6.2.8-h10_6.2.8-948_	cpe:2.3:a:palo_alto_networks:globalprotect_app:::macos:::::*
palo_alto_networks	globalprotect_app	>= 6.1, < 6.1.13	cpe:2.3:a:palo_alto_networks:globalprotect_app:::android:::::*
palo_alto_networks	globalprotect_app	>= 6.1, < 6.1.13	cpe:2.3:a:palo_alto_networks:globalprotect_app:::chrome_os:::::*
palo_alto_networks	globalprotect_app	>= 6.3.0, < 6.3.3-h2_6.3.3-42_	cpe:2.3:a:palo_alto_networks:globalprotect_app:::linux:::::*
palo_alto_networks	globalprotect_app	>= 6.0.0, < 6.0.11	cpe:2.3:a:palo_alto_networks:globalprotect_app:::linux:::::*
palo_alto_networks	globalprotect_app	>= 6.0, < 6.0.13	cpe:2.3:a:palo_alto_networks:globalprotect_app:::windows:::::*
palo_alto_networks	globalprotect_app	>= 6.0, < 6.0.13	cpe:2.3:a:palo_alto_networks:globalprotect_app:::macos:::::*
palo_alto_networks	globalprotect_app	>= 6.0, < 6.0.14	cpe:2.3:a:palo_alto_networks:globalprotect_app:::android:::::*
palo_alto_networks	globalprotect_app	>= 6.0, < 6.0.14	cpe:2.3:a:palo_alto_networks:globalprotect_app:::chrome_os:::::*
palo_alto_networks	globalprotect_uwp_app	>= 6.3, < 6.3.3-h10	cpe:2.3:a:palo_alto_networks:globalprotect_uwp_app:::windows:::::*

References for CVE-2026-0250

URL	Tags
https://security.paloaltonetworks.com/CVE-2026-0250

URL

CVE-2026-0250 | GlobalProtect App: Buffer Overflow Vulnerability during connection to Portal or Gateway

Exploit prediction scoring system (EPSS) score for CVE-2026-0250

Common vulnerability scoring system (CVSS) metrics for CVE-2026-0250

Weakness enumeration for CVE-2026-0250

GitHub Security Advisory for CVE-2026-0250

Affected software / configurations for CVE-2026-0250

References for CVE-2026-0250