CVE-2026-0277

An improper certificate validation vulnerability in the Prisma® Access Agent for iOS enables an attacker to perform a man-in-the-middle (MitM) attack to intercept VPN traffic. The Prisma Access Agent on Windows, macOS, Linux, Android and ChromeOS are not affected.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://security.paloaltonetworks.com/CVE-2026-0277	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:paloaltonetworks:prisma_access_agent:*:*:*:*:*:*:*:*

cpe:2.3:o:apple:iphone_os:-:*:*:*:*:*:*:*

History

16 Jul 2026, 14:26

Type	Values Removed	Values Added
First Time		Paloaltonetworks Apple Paloaltonetworks prisma Access Agent Apple iphone Os
CPE		cpe:2.3:o:apple:iphone_os:-:::::::* cpe:2.3:a:paloaltonetworks:prisma_access_agent::::::::
References	~~() https://security.paloaltonetworks.com/CVE-2026-0277 -~~	() https://security.paloaltonetworks.com/CVE-2026-0277 - Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.9

09 Jul 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-09 20:16

Updated : 2026-07-16 14:26

NVD link : CVE-2026-0277

Mitre link : CVE-2026-0277

CVE.ORG link : CVE-2026-0277

JSON object : View

Products Affected

apple

iphone_os

paloaltonetworks

prisma_access_agent

CWE

CWE-295

Improper Certificate Validation

{"id": "CVE-2026-0277", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-0277", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-07-10T14:19:46.628829Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.2}], "cvssMetricV40": [{"type": "Secondary", "source": "psirt@paloaltonetworks.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "USER", "baseScore": 5.7, "Automatable": "NO", "attackVector": "ADJACENT", "baseSeverity": "MEDIUM", "valueDensity": "DIFFUSE", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/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", "exploitMaturity": "UNREPORTED", "providerUrgency": "AMBER", "userInteraction": "PASSIVE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "MODERATE", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "psirt@paloaltonetworks.com", "affectedData": [{"vendor": "Palo Alto Networks", "product": "Prisma Access Agent", "versions": [{"status": "affected", "changes": [{"at": "26.2.1", "status": "unaffected"}], "version": "0", "lessThan": "26.2.1", "versionType": "custom"}], "platforms": ["iOS"], "defaultStatus": "unaffected"}, {"vendor": "Palo Alto Networks", "product": "Prisma Access Agent", "versions": [{"status": "unaffected", "version": "All", "versionType": "custom"}], "platforms": ["Linux", "Windows", "macOS", "Android", "ChromeOS"], "defaultStatus": "unaffected"}]}], "published": "2026-07-09T20:16:24.840", "references": [{"url": "https://security.paloaltonetworks.com/CVE-2026-0277", "tags": ["Vendor Advisory"], "source": "psirt@paloaltonetworks.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "psirt@paloaltonetworks.com", "description": [{"lang": "en", "value": "CWE-295"}]}], "descriptions": [{"lang": "en", "value": "An improper certificate validation vulnerability in the Prisma\u00ae Access Agent for iOS enables an attacker to perform a man-in-the-middle (MitM) attack to intercept VPN traffic. \n\nThe Prisma Access Agent on Windows, macOS, Linux, Android and ChromeOS are not affected."}], "lastModified": "2026-07-16T14:26:06.743", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:paloaltonetworks:prisma_access_agent:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "55CDB450-F60C-4E24-9580-6E9B787B1FB1", "versionEndExcluding": "26.2.1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:apple:iphone_os:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "B5415705-33E5-46D5-8E4D-9EBADC8C5705"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "psirt@paloaltonetworks.com"}