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CVE-2026-101982

Junos OS and Junos OS Evolved: A EVPN peer causes an rpd crash or root-level compromise when EVPN-VPWS is used

Critical9.3EPSS 0.57%
Published
Updated
Reserved
Assigned by
juniper

Description

A Stack-based Buffer Overflow vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a configured BGP/EVPN peer to cause root code execution on Junos OS or an rpd crash on Junos OS Evolved via protocol-valid route advertisements for an EVPN-VPWS service.

Scores

CVSS scores of CVE-2026-101982, by who scored it
Scored byCVSSScoreVector
juniperCNA (assigner)4.0Critical9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L
juniperCNA (assigner)3.1Critical9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Awaiting Analysis4.0Critical9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L/E:X/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:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
0.57% · top 53% of all CVEs (5 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.3.

Weakness

Affected products

  • Juniper Networks · Junos OS

    • affected < 23.2R2-S7.7
    • affected 23.4 – < 23.4R2-S8.13
    • affected 24.2 – < 24.2R2-S5.5
    • affected 24.4 – < 24.4R2-S5
    • affected 25.2 – < 25.2R2-S2
    • affected 25.4 – < 25.4R1-S3
    • affected 26.2 – < 26.2R1-S2

  • Juniper Networks · Junos OS Evolved

    • affected < 23.2R2-S7.7-EVO
    • affected 23.4 – < 23.4R2-S8.11-EVO
    • affected 24.2 – < 24.2R2-S5.6-EVO
    • affected 24.4 – < 24.4R2-S5-EVO
    • affected 25.2 – < 25.2R2-S2-EVO
    • affected 25.4 – < 25.4R1-S3-EVO
    • affected 26.2 – < 26.2R1-S2-EVO
    • affected 23.4X100
    • affected 25.2X100 – < 25.2X100-D35-EVO
    • affected 25.4X300 – < 25.4X300-D40-EVO

What to do

Solution: The following software releases have been updated to resolve this specific issue: Junos OS: 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S5, 25.2R2-S2, 25.4R1-S3, 25.4R2, 26.2R1-S2, 26.2R2, 26.4R1, and all subsequent releases. Junos OS Evolved: 23.2R2-S7.7-EVO, 23.4R2-S8.11-EVO, 24.2R2-S5.6-EVO, 24.4R2-S5-EVO, 25.2R2-S2-EVO, 25.2X100-D35-EVO, 25.4R1-S3-EVO, 25.4R2-EVO, 25.4X300-D40-EVO, 26.2R1-S2-EVO, 26.2R2-EVO, 26.4R1-EVO, and all subsequent releases. Note: For Junos OS releases 23.2, 23.4, and 24.2, and Junos OS Evolved releases 23.2-EVO, 23.4-EVO, and 24.2-EVO, specific respins have been referenced. Previously published versions of these releases have been rebuilt to resolve the security vulnerabilities identified in this advisory.

Workaround: There are no known workarounds for this issue.

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 .