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Vulnerabilities

Vulnerability · CVE-2026-101959

A Function Call With Incorrect Variable or Reference as Argument vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved a…

Published Oct 14, 2026 · catalog updated Oct 15, 2026 · the affected product

Check if you run it

No confirmed exploitation is on record for CVE-2026-101959. EPSS is 0.25%. Act only if a listed version of the affected product is installed.

Gaps on this record

  • No plain product name is stored. The page cannot tell you which product to check.
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.25%
Remediation
Not established
Affected products
See sources for product scope

A Function Call With Incorrect Variable or Reference as Argument vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause an rpd crash via specifically malformed LSP-ping.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-101959

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-101959. EPSS is 0.25%. Act only if a listed version of the affected product is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-688. EPSS 0.25%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 14, 2026 · NIST NVD

    Detected

    A Function Call With Incorrect Variable or Reference as Argument vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause an rpd crash via specifically malformed LSP-ping.

  2. Oct 14, 2026 · NIST NVD

    Updated

    A Function Call With Incorrect Variable or Reference as Argument vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause an rpd crash via specifically malformed LSP-ping.

  3. Oct 15, 2026 · NIST NVD

    Updated

    A Function Call With Incorrect Variable or Reference as Argument vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause an rpd crash via specifically malformed LSP-ping.

Sources

  • CVE.orgVulnerability recordCVE-2026-101959

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-101959

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-101959

    A Function Call With Incorrect Variable or Reference as Argument vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause an rpd crash via specifically malformed LSP-ping.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.