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Medium severity4.2NVD Advisory· Published Aug 11, 2021· Updated Jun 17, 2026

CVE-2021-3047

CVE-2021-3047

Description

A cryptographically weak pseudo-random number generator (PRNG) is used during authentication to the Palo Alto Networks PAN-OS web interface. This enables an authenticated attacker, with the capability to observe their own authentication secrets over a long duration on the PAN-OS appliance, to impersonate another authenticated web interface administrator's session. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.19; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.10; PAN-OS 10.0 versions earlier than PAN-OS 10.0.4. PAN-OS 10.1 versions are not impacted.

AI Insight

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Affected products

3
  • Paloaltonetworks/Pan OS3 versions
    cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*range: >=8.1.0,<8.1.19
    • (no CPE)range: <8.1.19, <9.0.14, <9.1.10, <10.0.4
    • (no CPE)range: 8.1

Patches

Vulnerability mechanics

References

1

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