CVE-2026-0248 (GCVE-0-2026-0248)

Vulnerability from cvelistv5 – Published: 2026-05-13 19:05 – Updated: 2026-05-13 19:29
VLAI
Title
Prisma Access Agent: Improper Certificate Validation Vulnerability
Summary
An improper certificate validation vulnerability in the Prisma Access Agent® for Android and Chrome OS enables an attacker to perform a man-in-the-middle (MitM) attack to intercept VPN traffic. By presenting a certificate for any domain issued by a trusted Certificate Authority, the attacker can capture sensitive device information. The Prisma Access Agent on macOS, Windows, Linux and iOS are not affected.
Severity
6.2 (Medium)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/E:U/AU:Y/R:A/V:D/RE:M/U:Amber
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 19:17 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
palo_alto CNA under the mitre root
CNA scorecard A 95/100 over 78 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Palo Alto Networks Prisma Access Agent Affected: 0 , < 26.2.1 (custom)
    cpe:2.3:a:palo_alto_networks:prisma_access_agent:*:*:android:*:*:*:*:*
    cpe:2.3:a:palo_alto_networks:prisma_access_agent:*:*:chrome_os:*:*:*:*:*
Create a notification for this product.
Palo Alto Networks Prisma Access Agent Unaffected: All (custom)
guessed Create a notification for this product.
Date Public
2026-05-13 16:00
Credits
Palo Alto Networks thanks our internal security research teams for discovering and reporting this issue.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-0248",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-13T19:17:42.438347Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-13T19:29:24.329Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Android",
            "Chrome OS"
          ],
          "product": "Prisma Access Agent",
          "vendor": "Palo Alto Networks",
          "versions": [
            {
              "changes": [
                {
                  "at": "26.2.1",
                  "status": "unaffected"
                }
              ],
              "lessThan": "26.2.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "iOS",
            "Linux",
            "macOS",
            "Windows"
          ],
          "product": "Prisma Access Agent",
          "vendor": "Palo Alto Networks",
          "versions": [
            {
              "status": "unaffected",
              "version": "All",
              "versionType": "custom"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "eng",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eNo special configuration is required.\u003c/p\u003e"
            }
          ],
          "value": "No special configuration is required."
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:palo_alto_networks:prisma_access_agent:*:*:android:*:*:*:*:*",
                  "versionEndExcluding": "26.2.1",
                  "versionStartIncluding": "0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:palo_alto_networks:prisma_access_agent:*:*:chrome_os:*:*:*:*:*",
                  "versionEndExcluding": "26.2.1",
                  "versionStartIncluding": "0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            },
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:palo_alto_networks:prisma_access_agent:all:*:ios:*:*:*:*:*",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:a:palo_alto_networks:prisma_access_agent:all:*:linux:*:*:*:*:*",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:a:palo_alto_networks:prisma_access_agent:all:*:macos:*:*:*:*:*",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:a:palo_alto_networks:prisma_access_agent:all:*:windows:*:*:*:*:*",
                  "vulnerable": false
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "other",
          "value": "Palo Alto Networks thanks our internal security research teams for discovering and reporting this issue."
        }
      ],
      "datePublic": "2026-05-13T16:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eAn improper certificate validation vulnerability in the Prisma Access Agent\u00ae for Android and Chrome OS enables an attacker to perform a man-in-the-middle (MitM) attack to intercept VPN traffic. By presenting a certificate for any domain issued by a trusted Certificate Authority, the attacker can capture sensitive device information.\u003c/p\u003e\u003cp\u003eThe Prisma Access Agent on macOS, Windows, Linux and iOS are not affected.\u003c/p\u003e"
            }
          ],
          "value": "An improper certificate validation vulnerability in the Prisma Access Agent\u00ae for Android and Chrome OS enables an attacker to perform a man-in-the-middle (MitM) attack to intercept VPN traffic. By presenting a certificate for any domain issued by a trusted Certificate Authority, the attacker can capture sensitive device information.\n\n\n\nThe Prisma Access Agent on macOS, Windows, Linux and iOS are not affected."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003ePalo Alto Networks is not aware of any malicious exploitation of this issue.\u003c/p\u003e"
            }
          ],
          "value": "Palo Alto Networks is not aware of any malicious exploitation of this issue."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-94",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-94 Adversary in the Middle (AiTM)"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "YES",
            "Recovery": "AUTOMATIC",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "ADJACENT",
            "baseScore": 6.2,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "UNREPORTED",
            "privilegesRequired": "NONE",
            "providerUrgency": "AMBER",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "NONE",
            "valueDensity": "DIFFUSE",
            "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/E:U/AU:Y/R:A/V:D/RE:M/U:Amber",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "MODERATE"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-295",
              "description": "CWE-295 Improper Certificate Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-13T19:05:00.190Z",
        "orgId": "d6c1279f-00f6-4ef7-9217-f89ffe703ec0",
        "shortName": "palo_alto"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.paloaltonetworks.com/CVE-2026-0248"
        }
      ],
      "solutions": [
        {
          "lang": "eng",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003ctable class=\"tbl\"\u003e\u003ctr\u003e\u003ctd\u003eVersion\u003c/td\u003e\u003ctd\u003eMinor Version\u003c/td\u003e\u003ctd\u003eSuggested Solution\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ePrisma Access Agent on Android\u003c/td\u003e\u003ctd\u003e25.0 through 26.2\u003c/td\u003e\u003ctd\u003eUpgrade to 26.2.1 or later.\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ePrisma Access Agent Chrome OS\u003c/td\u003e\u003ctd\u003e25.0 through 26.2\u003c/td\u003e\u003ctd\u003eUpgrade to 26.2.1 or later.\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ePrisma Access Agent on iOS\u003c/td\u003e\u003ctd\u003e\u003cbr\u003e\u003c/td\u003e\u003ctd\u003eNo action needed\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ePrisma Access Agent on Linux\u003c/td\u003e\u003ctd\u003e\u003cbr\u003e\u003c/td\u003e\u003ctd\u003eNo action needed\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ePrisma Access Agent on macOS\u003c/td\u003e\u003ctd\u003e\u003cbr\u003e\u003c/td\u003e\u003ctd\u003eNo action needed\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ePrisma Access Agent on Windows\u003c/td\u003e\u003ctd\u003e\u003cbr\u003e\u003c/td\u003e\u003ctd\u003eNo action needed\u003c/td\u003e\u003c/tr\u003e\u003c/table\u003e"
            }
          ],
          "value": "Version  Minor Version  Suggested Solution\nPrisma Access Agent on Android  25.0 through 26.2  Upgrade to 26.2.1 or later.\nPrisma Access Agent Chrome OS  25.0 through 26.2  Upgrade to 26.2.1 or later.\nPrisma Access Agent on iOS    No action needed\nPrisma Access Agent on Linux    No action needed\nPrisma Access Agent on macOS    No action needed\nPrisma Access Agent on Windows    No action needed"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2026-05-13T16:00:00.000Z",
          "value": "Initial publication."
        }
      ],
      "title": "Prisma Access Agent: Improper Certificate Validation Vulnerability",
      "workarounds": [
        {
          "lang": "eng",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eNo known workarounds exist for this issue.\u003c/p\u003e"
            }
          ],
          "value": "No known workarounds exist for this issue."
        }
      ],
      "x_affectedList": [
        "Prisma Access Agent   26.2.0"
      ],
      "x_generator": {
        "engine": "Vulnogram 0.1.0-dev"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d6c1279f-00f6-4ef7-9217-f89ffe703ec0",
    "assignerShortName": "palo_alto",
    "cveId": "CVE-2026-0248",
    "datePublished": "2026-05-13T19:05:00.190Z",
    "dateReserved": "2025-11-03T20:44:09.168Z",
    "dateUpdated": "2026-05-13T19:29:24.329Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-0248",
      "date": "2026-11-14",
      "epss": "0.00188",
      "percentile": "0.08525"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "platforms": [
                  "Android",
                  "Chrome OS"
                ],
                "product": "Prisma Access Agent",
                "vendor": "Palo Alto Networks",
                "versions": [
                  {
                    "changes": [
                      {
                        "at": "26.2.1",
                        "status": "unaffected"
                      }
                    ],
                    "lessThan": "26.2.1",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "defaultStatus": "unaffected",
                "platforms": [
                  "iOS",
                  "Linux",
                  "macOS",
                  "Windows"
                ],
                "product": "Prisma Access Agent",
                "vendor": "Palo Alto Networks",
                "versions": [
                  {
                    "status": "unaffected",
                    "version": "All",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "psirt@paloaltonetworks.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:paloaltonetworks:prisma_access_agent:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "55CDB450-F60C-4E24-9580-6E9B787B1FB1",
                    "versionEndExcluding": "26.2.1",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:google:android:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F8B9FEC8-73B6-43B8-B24E-1F7C20D91D26",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:google:chrome_os:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D32ACF6F-5FF7-4815-8EAD-4719F5FC9B79",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "An improper certificate validation vulnerability in the Prisma Access Agent\u00ae for Android and Chrome OS enables an attacker to perform a man-in-the-middle (MitM) attack to intercept VPN traffic. By presenting a certificate for any domain issued by a trusted Certificate Authority, the attacker can capture sensitive device information.\n\n\n\nThe Prisma Access Agent on macOS, Windows, Linux and iOS are not affected."
          },
          {
            "lang": "es",
            "value": "Una vulnerabilidad de validaci\u00f3n de certificado incorrecta en el Prisma Access Agent\u00ae para Android y Chrome OS permite a un atacante realizar un ataque man-in-the-middle (MitM) para interceptar el tr\u00e1fico VPN. Al presentar un certificado para cualquier dominio emitido por una Autoridad de Certificaci\u00f3n de confianza, el atacante puede capturar informaci\u00f3n sensible del dispositivo.\n\nEl Prisma Access Agent en macOS, Windows, Linux e iOS no se ven afectados."
          }
        ],
        "id": "CVE-2026-0248",
        "lastModified": "2026-10-26T14:10:00.130",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.9,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.2,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "YES",
                "Recovery": "AUTOMATIC",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "ADJACENT",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 6.2,
                "baseSeverity": "MEDIUM",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "UNREPORTED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "AMBER",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "LOW",
                "subIntegrityImpact": "LOW",
                "userInteraction": "NONE",
                "valueDensity": "DIFFUSE",
                "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/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:Y/R:A/V:D/RE:M/U:Amber",
                "version": "4.0",
                "vulnAvailabilityImpact": "NONE",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "MODERATE"
              },
              "source": "psirt@paloaltonetworks.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-0248",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-13T19:17:42.438347Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-05-13T19:16:58.920",
        "references": [
          {
            "source": "psirt@paloaltonetworks.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://security.paloaltonetworks.com/CVE-2026-0248"
          }
        ],
        "sourceIdentifier": "psirt@paloaltonetworks.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-295"
              }
            ],
            "source": "psirt@paloaltonetworks.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-06-05T19:25:36+00:00",
      "cve": "CVE-2026-0248",
      "id": "CVE-2026-0248",
      "initial_release_date": "2026-05-13T16:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Prisma Access Agent: Improper Certificate Validation Vulnerability",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-0248.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-0248",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-05-13T19:17:42.438347Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-05-13T19:29:19.060Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "platforms": [
                "Android",
                "Chrome OS"
              ],
              "product": "Prisma Access Agent",
              "vendor": "Palo Alto Networks",
              "versions": [
                {
                  "changes": [
                    {
                      "at": "26.2.1",
                      "status": "unaffected"
                    }
                  ],
                  "lessThan": "26.2.1",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "platforms": [
                "iOS",
                "Linux",
                "macOS",
                "Windows"
              ],
              "product": "Prisma Access Agent",
              "vendor": "Palo Alto Networks",
              "versions": [
                {
                  "status": "unaffected",
                  "version": "All",
                  "versionType": "custom"
                }
              ]
            }
          ],
          "configurations": [
            {
              "lang": "eng",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003eNo special configuration is required.\u003c/p\u003e"
                }
              ],
              "value": "No special configuration is required."
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:a:palo_alto_networks:prisma_access_agent:*:*:android:*:*:*:*:*",
                      "versionEndExcluding": "26.2.1",
                      "versionStartIncluding": "0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:a:palo_alto_networks:prisma_access_agent:*:*:chrome_os:*:*:*:*:*",
                      "versionEndExcluding": "26.2.1",
                      "versionStartIncluding": "0",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                },
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:a:palo_alto_networks:prisma_access_agent:all:*:ios:*:*:*:*:*",
                      "vulnerable": false
                    },
                    {
                      "criteria": "cpe:2.3:a:palo_alto_networks:prisma_access_agent:all:*:linux:*:*:*:*:*",
                      "vulnerable": false
                    },
                    {
                      "criteria": "cpe:2.3:a:palo_alto_networks:prisma_access_agent:all:*:macos:*:*:*:*:*",
                      "vulnerable": false
                    },
                    {
                      "criteria": "cpe:2.3:a:palo_alto_networks:prisma_access_agent:all:*:windows:*:*:*:*:*",
                      "vulnerable": false
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ],
              "operator": "OR"
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "other",
              "value": "Palo Alto Networks thanks our internal security research teams for discovering and reporting this issue."
            }
          ],
          "datePublic": "2026-05-13T16:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003eAn improper certificate validation vulnerability in the Prisma Access Agent\u00ae for Android and Chrome OS enables an attacker to perform a man-in-the-middle (MitM) attack to intercept VPN traffic. By presenting a certificate for any domain issued by a trusted Certificate Authority, the attacker can capture sensitive device information.\u003c/p\u003e\u003cp\u003eThe Prisma Access Agent on macOS, Windows, Linux and iOS are not affected.\u003c/p\u003e"
                }
              ],
              "value": "An improper certificate validation vulnerability in the Prisma Access Agent\u00ae for Android and Chrome OS enables an attacker to perform a man-in-the-middle (MitM) attack to intercept VPN traffic. By presenting a certificate for any domain issued by a trusted Certificate Authority, the attacker can capture sensitive device information.\n\n\n\nThe Prisma Access Agent on macOS, Windows, Linux and iOS are not affected."
            }
          ],
          "exploits": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003ePalo Alto Networks is not aware of any malicious exploitation of this issue.\u003c/p\u003e"
                }
              ],
              "value": "Palo Alto Networks is not aware of any malicious exploitation of this issue."
            }
          ],
          "impacts": [
            {
              "capecId": "CAPEC-94",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "CAPEC-94 Adversary in the Middle (AiTM)"
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "Automatable": "YES",
                "Recovery": "AUTOMATIC",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "ADJACENT",
                "baseScore": 6.2,
                "baseSeverity": "MEDIUM",
                "exploitMaturity": "UNREPORTED",
                "privilegesRequired": "NONE",
                "providerUrgency": "AMBER",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "LOW",
                "subIntegrityImpact": "LOW",
                "userInteraction": "NONE",
                "valueDensity": "DIFFUSE",
                "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/E:U/AU:Y/R:A/V:D/RE:M/U:Amber",
                "version": "4.0",
                "vulnAvailabilityImpact": "NONE",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "MODERATE"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-295",
                  "description": "CWE-295 Improper Certificate Validation",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-13T19:05:00.190Z",
            "orgId": "d6c1279f-00f6-4ef7-9217-f89ffe703ec0",
            "shortName": "palo_alto"
          },
          "references": [
            {
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://security.paloaltonetworks.com/CVE-2026-0248"
            }
          ],
          "solutions": [
            {
              "lang": "eng",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003ctable class=\"tbl\"\u003e\u003ctr\u003e\u003ctd\u003eVersion\u003c/td\u003e\u003ctd\u003eMinor Version\u003c/td\u003e\u003ctd\u003eSuggested Solution\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ePrisma Access Agent on Android\u003c/td\u003e\u003ctd\u003e25.0 through 26.2\u003c/td\u003e\u003ctd\u003eUpgrade to 26.2.1 or later.\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ePrisma Access Agent Chrome OS\u003c/td\u003e\u003ctd\u003e25.0 through 26.2\u003c/td\u003e\u003ctd\u003eUpgrade to 26.2.1 or later.\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ePrisma Access Agent on iOS\u003c/td\u003e\u003ctd\u003e\u003cbr\u003e\u003c/td\u003e\u003ctd\u003eNo action needed\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ePrisma Access Agent on Linux\u003c/td\u003e\u003ctd\u003e\u003cbr\u003e\u003c/td\u003e\u003ctd\u003eNo action needed\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ePrisma Access Agent on macOS\u003c/td\u003e\u003ctd\u003e\u003cbr\u003e\u003c/td\u003e\u003ctd\u003eNo action needed\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ePrisma Access Agent on Windows\u003c/td\u003e\u003ctd\u003e\u003cbr\u003e\u003c/td\u003e\u003ctd\u003eNo action needed\u003c/td\u003e\u003c/tr\u003e\u003c/table\u003e"
                }
              ],
              "value": "Version  Minor Version  Suggested Solution\nPrisma Access Agent on Android  25.0 through 26.2  Upgrade to 26.2.1 or later.\nPrisma Access Agent Chrome OS  25.0 through 26.2  Upgrade to 26.2.1 or later.\nPrisma Access Agent on iOS    No action needed\nPrisma Access Agent on Linux    No action needed\nPrisma Access Agent on macOS    No action needed\nPrisma Access Agent on Windows    No action needed"
            }
          ],
          "source": {
            "discovery": "INTERNAL"
          },
          "timeline": [
            {
              "lang": "en",
              "time": "2026-05-13T16:00:00.000Z",
              "value": "Initial publication."
            }
          ],
          "title": "Prisma Access Agent: Improper Certificate Validation Vulnerability",
          "workarounds": [
            {
              "lang": "eng",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003eNo known workarounds exist for this issue.\u003c/p\u003e"
                }
              ],
              "value": "No known workarounds exist for this issue."
            }
          ],
          "x_affectedList": [
            "Prisma Access Agent   26.2.0"
          ],
          "x_generator": {
            "engine": "Vulnogram 0.1.0-dev"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "d6c1279f-00f6-4ef7-9217-f89ffe703ec0",
        "assignerShortName": "palo_alto",
        "cveId": "CVE-2026-0248",
        "datePublished": "2026-05-13T19:05:00.190Z",
        "dateReserved": "2025-11-03T20:44:09.168Z",
        "dateUpdated": "2026-05-13T19:29:24.329Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.