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CVE-2020-1982

PAN-OS: TLS 1.0 usage for certain communications with Palo Alto Networks cloud delivered services

Medium4.8EPSS 0.45%
Published
Updated
Reserved
Assigned by
palo_alto

Description

Certain communication between PAN-OS and cloud-delivered services inadvertently use TLS 1.0, which is known to be a cryptographically weak protocol. These cloud services include Cortex Data Lake, the Customer Support Portal, and the Prisma Access infrastructure. Conditions required for exploitation of known TLS 1.0 weaknesses do not exist for the communication between PAN-OS and cloud-delivered services. We do not believe that any communication is impacted as a result of known attacks against TLS 1.0. This issue impacts: All versions of PAN-OS 8.0; PAN-OS 8.1 versions earlier than PAN-OS 8.1.14; PAN-OS 9.0 versions earlier than PAN-OS 9.0.9; PAN-OS 9.1 versions earlier than PAN-OS 9.1.3. PAN-OS 7.1 is not impacted by this issue.

Scores

CVSS scores of CVE-2020-1982, by who scored it
Scored byCVSSScoreVector
palo_altoCNA (assigner)3.1Medium4.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
NVDNVD · Modified3.1Medium4.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS (exploitation in 30 days)
0.45% · top 61% of all CVEs (4 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.8.

Weakness

Affected products

  • Palo Alto Networks · PAN-OS

    • affected 8.0.*
    • unaffected 7.1.*
    • affected 9.1 – < 9.1.3
    • affected 9.0 – < 9.0.9
    • affected 8.1 – < 8.1.15

What to do

Solution: This issue is fixed in PAN-OS 8.1.15, PAN-OS 9.0.9, PAN-OS 9.1.3, and all later PAN-OS versions. A fixed version of PAN-OS is required to ensure secure usage of cloud-delivered services without interruption. PAN-OS 7.1 and PAN-OS 8.0 are end-of-life (as of June 30, 2020 and October 31, 2019 respectively) and are no longer covered by our Product Security Assurance policies.

Workaround: Since TLS 1.0 weaknesses are exploited by the man-in-the-middle type of attackers, ensuring security of the networks reduces risks of exploitation of these issues.

Exploitation: Conditions required for exploitation of known TLS 1.0 weaknesses do not exist for the communication between PAN-OS and cloud delivered services. Palo Alto Networks is not aware of any malicious exploitation of this issue.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .