Junos OS and Junos OS Evolved: A BGP-LS peer causes heap data disclosure when traffic-engineering routing is enabled (Juniper Networks Junos OS)

CVE-2026-101991
MEDIUM 5.3

At a glance

Source
NVD
EPSS
EPSS 0.19 % · percentile 9 ()
State
PUBLISHED
Published
Updated
Assigner
juniper
NVD status
Awaiting Analysis

Description

An Improper Handling of Length Parameter Inconsistency vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a configured BGP-LS peer to cause heap data disclosure via a malformed UPDATE sent over a session with the traffic-engineering address family enabled.

Weaknesses (CWE)

  • CWE-130 — Improper Handling of Length Parameter Inconsistency

References

Scores

VersionScoreVectorScored by
CVSS 3.1LOW 3.1CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:Njuniper
CVSS 4.0MEDIUM 5.3CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:Njuniper
CVSS 4.0MEDIUM 5.3CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/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:XNVD · sirt@juniper.net (Secondary)
CVSS 3.1LOW 3.1CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:NNVD · sirt@juniper.net (Secondary)

European references

CERT-FR advisories

Affected products

ProductVersions
Juniper Networks · Junos OSaffected 0 < 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
Juniper Networks · Junos OS Evolvedaffected 0 < 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

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD