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CVE-2022-22241

Junos OS: Vulnerability in J-Web may allow deserialization without authentication

High8.1EPSS 1.3%
Published
Updated
Reserved
Assigned by
juniper

Description

An Improper Input Validation vulnerability in the J-Web component of Juniper Networks Junos OS may allow an unauthenticated attacker to access data without proper authorization. Utilizing a crafted POST request, deserialization may occur which could lead to unauthorized local file access or the ability to execute arbitrary commands. This issue affects Juniper Networks Junos OS: all versions prior to 19.1R3-S9; 19.2 versions prior to 19.2R3-S6; 19.3 versions prior to 19.3R3-S7; 19.4 versions prior to 19.4R2-S7, 19.4R3-S9; 20.1 versions prior to 20.1R3-S5; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S2; 21.2 versions prior to 21.2R3-S1; 21.3 versions prior to 21.3R2-S2, 21.3R3; 21.4 versions prior to 21.4R1-S2, 21.4R2-S1, 21.4R3; 22.1 versions prior to 22.1R1-S1, 22.1R2.

Timeline

  1. ID reserved

    By juniper

  2. · 10 months later

    Published

  3. · 3 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2022-22241, by who scored it
Scored byCVSSScoreVector
juniperCNA (assigner)3.1High8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.1Critical9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
1.3% · top 29% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.

Weakness

Affected products

  • Juniper Networks · Junos OS

    • affected unspecified – < 19.1R3-S9
    • affected 19.2 – < 19.2R3-S6
    • affected 19.3 – < 19.3R3-S7
    • affected 19.4 – < 19.4R2-S7, 19.4R3-S9
    • affected 20.1 – < 20.1R3-S5
    • affected 20.2 – < 20.2R3-S5
    • affected 20.3 – < 20.3R3-S5
    • affected 20.4 – < 20.4R3-S4
    • affected 21.1 – < 21.1R3-S2
    • affected 21.2 – < 21.2R3-S1
    • affected 21.3 – < 21.3R2-S2, 21.3R3
    • affected 21.4 – < 21.4R1-S2, 21.4R2-S1, 21.4R3
    • affected 22.1 – < 22.1R1-S1, 22.1R2

What to do

Solution: The following software releases have been updated to resolve this specific issue: 19.1R3-S9, 19.2R3-S6, 19.3R3-S7, 19.4R2-S7, 19.4R3-S9, 20.1R3-S5, 20.2R3-S5, 20.3R3-S5, 20.4R3-S4, 21.1R3-S2, 21.2R3-S1, 21.3R2-S2, 21.3R3, 21.4R1-S2, 21.4R2-S1, 21.4R3, 22.1R1-S1, 22.1R2, 22.2R1, and all subsequent releases.

Workaround: Disable J-Web, or limit access to only trusted hosts.

Exploitation: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

References (1)

Sources

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

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Record last updated .