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CVE-2026-101965

Junos OS Evolved: An attacker causes telemetry disruption when network analytics telemetry is enabled

High8.7EPSS 0.60%
Published
Updated
Reserved
Assigned by
juniper

Description

An Use of Externally-Controlled Format String vulnerability in the gRPC daemon of Juniper Networks Junos OS Evolved allows an authenticated network attacker to cause telemetry-service disruption, information disclosure, or potential root-level code execution via a crafted message to the gNMI service.

Timeline

  1. ID reserved

    By juniper

  2. · 16 days later

    Published

  3. · 1 day 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-2026-101965, by who scored it
Scored byCVSSScoreVector
juniperCNA (assigner)4.0High8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L
juniperCNA (assigner)3.1High8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Awaiting Analysis4.0High8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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)
0.60% · top 51% 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 8.7.

Weakness

Affected products

  • Juniper Networks · Junos OS Evolved

    • 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 Evolved: 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.

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 .