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CVE-2026-102016· CVE.org (no NVD analysis yet)· CNA juniper

Junos OS and Junos OS Evolved: An attacker causes a routing outage when BGP MVPN signaling is enabled

Noroxi assessment

Priority: Monitor (action score 34/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.46% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

An Improper Validation of Specified Quantity in Input vulnerability in the rpd process of Juniper Networks Junos OS and Junos OS Evolved allows a configured BGP MVPN peer to cause a denial of service via a BGP MVPN signaling update.

HighCVSS 8.7 · v4.0—No exploit No fix recorded
Published
Oct 14, 2026
Updated
Oct 16, 2026
EPSS
0.4% · 38th percentile

Report tools

JSON

Action score

34

Monitor

Low priority for now.

CVSS
34 / 40 · 8.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · juniper
7.5
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-102016

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (juniper). Independent of NVD's CPE analysis and usually ahead of it.

  • Juniper Networks Junos OS

    • before 23.2R2-S7.7affected
    • 23.4 and later · before 23.4R2-S8.13affected
    • 24.2 and later · before 24.2R2-S5.5affected
    • 24.4 and later · before 24.4R2-S5affected
    • 25.2 and later · before 25.2R2-S2affected
    • 25.4 and later · before 25.4R1-S3affected
    • 26.2 and later · before 26.2R1-S2affected

  • Juniper Networks Junos OS Evolved

    • 23.4X100affected
    • before 23.2R2-S7.7-EVOaffected
    • 23.4 and later · before 23.4R2-S8.11-EVOaffected
    • 24.2 and later · before 24.2R2-S5.6-EVOaffected
    • 24.4 and later · before 24.4R2-S5-EVOaffected
    • 25.2 and later · before 25.2R2-S2-EVOaffected
    • 25.4 and later · before 25.4R1-S3-EVOaffected
    • 26.2 and later · before 26.2R1-S2-EVOaffected
    • 25.2X100 and later · before 25.2X100-D35-EVOaffected
    • 25.4X300 and later · before 25.4X300-D40-EVOaffected

Same product

juniper networks: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-101983Junos OS and Junos OS Evolved: An attacker causes remote code execution when J-Web virtual-domain is configured
    37Monitor
  • CVE-2026-101982Junos OS and Junos OS Evolved: A EVPN peer causes an rpd crash or root-level compromise when EVPN-VPWS is used
    37Monitor
  • CVE-2026-101954Junos OS and Junos OS Evolved: Unauthenticated network access causes full device takeover when J-Web is enabled
    37Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-102014Oct 14, 2026 · Junos OS: An attacker causes authd to crash when subscriber RADIUS authentication is used
    34Monitor
  • ← EarlierCVE-2026-102015Oct 14, 2026 · Junos OS and Junos OS Evolved: An attacker causes root code execution when 802.1X authentication is used
    34Monitor
  • Later →CVE-2026-102017Oct 14, 2026 · Junos OS and Junos OS Evolved: An attacker causes routing-plane denial of service when Auto-RP mapping is enabled
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-1019520 days apartJunos OS and Junos OS Evolved: A specific BGP ISO-VPN update causes an rpd crash when BMP or NSR is enabled
    34Monitor
  • CVE-2026-1020650 days apartJunos OS and Junos OS Evolved: A malformed SRv6 service route causes an rpd crash when dynamic tunnels are enabled
    34Monitor
  • CVE-2026-1021830 days apartJunos OS and Junos OS Evolved: If in a BGP EVPN scenario a malformed NLRI is received rpd crashes
    34Monitor
  • CVE-2026-1021840 days apartJunos OS and Junos OS Evolved: A malformed EVPN SRv6 route causes an rpd crash
    34Monitor
  • CVE-2026-1020330 days apartJunos OS and Junos OS Evolved: An attacker causes denial of service when MC-LAG MAC synchronization is enabled
    28Monitor
  • CVE-2026-1020660 days apartJunos OS and Junos OS Evolved: Malformed RSVP packet causes a rpd crash when RSVP is enabled
    28Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
X

Weakness class (CWE)

CWE-1284 · Improper Validation of Specified Quantity in Input

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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:Y/R:A/V:C/RE:M/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. SSVC exploitation— → none
  2. Exploit maturity— → none
  3. CVSS7.5 → 8.7

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records