How severe is CVE-2026-0277?

CVE-2026-0277 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-0277 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-0277?

CVE-2026-0277 affects Paloaltonetworks Prisma Access Agent. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-0277?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-0277 published?

CVE-2026-0277 was published on 2026-07-09 and last updated on 2026-07-16.

CVE-2026-0277

CVE-2026-0277 is a medium-severity vulnerability in Paloaltonetworks Prisma Access Agent with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v4: 5.7
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Paloaltonetworks Prisma Access Agent
Published: 2026-07-09
Last modified: 2026-07-16

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-0277?: CVE-2026-0277 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-0277 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-0277?: CVE-2026-0277 affects Paloaltonetworks Prisma Access Agent. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-0277?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-0277 published?: CVE-2026-0277 was published on 2026-07-09 and last updated on 2026-07-16.

References

https://security.paloaltonetworks.com/CVE-2026-0277

Affected products (1)

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

More vulnerabilities in Paloaltonetworks Prisma Access Agent

CVE-2026-0278 — High (CVSS 7.8): Multiple protection mechanism failures in the Prisma Access Agent Data Loss Prevention (DLP) component for Windows…
CVE-2026-0271 — High (CVSS 7.8): A privilege escalation (PE) vulnerability in the Palo Alto Networks Prisma Access Agent app on Linux devices enables a…
CVE-2026-0247 — High (CVSS 7.8): Multiple authorization bypass vulnerabilities in the Endpoint DLP component of Prisma Access Agent® allow a local…
CVE-2026-0246 — High (CVSS 7.8): A vulnerability with a privilege management mechanism in the Palo Alto Networks Prisma Access Agent® enables a locally…
CVE-2026-0248 — Medium (CVSS 5.9): An improper certificate validation vulnerability in the Prisma Access Agent® for Android and Chrome OS enables an…
CVE-2026-0245 — Medium (CVSS 5.5): Multiple information disclosure vulnerabilities in Prisma Access Agent® allow a local user to access sensitive…

All CVEs affecting Paloaltonetworks Prisma Access Agent →

Other CWE-295 (Improper Certificate Validation) vulnerabilities

CVE-2026-58162 — Critical (CVSS 10.0): The Apache Traffic Server certifier plugin generates certificates based on attacker-controlled client SNI. This issue…
CVE-2026-4370 — Critical (CVSS 10.0): A vulnerability was identified in Juju from version 3.2.0 until 3.6.19 and from version 4.0 until 4.0.4, where the…
CVE-2026-30836 — Critical (CVSS 10.0): Step CA is an online certificate authority for secure, automated certificate management for DevOps. Versions 0.30.0-rc6…
CVE-2025-68121 — Critical (CVSS 10.0): During session resumption in crypto/tls, if the underlying Config has its ClientCAs or RootCAs fields mutated between…
CVE-2022-20703 — Critical (CVSS 10.0): Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker…
CVE-2021-1471 — Critical (CVSS 9.9): Multiple vulnerabilities in Cisco Jabber for Windows, Cisco Jabber for MacOS, and Cisco Jabber for mobile platforms…

Browse all CWE-295 (Improper Certificate Validation) vulnerabilities →