7.1

CVE-2026-101987: juniper networks junos os

CVSS: 7.1v4.0HighAwaiting analysis
Published 14-10-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-101987 is a high (CVSS 7.1) vulnerability in juniper networks junos os. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 17.8% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v4.0 (CVE.org)
EPSS score
0.27%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-10-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

An Improper Validation of Specified Quantity in Input vulnerability in the routing daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent attacker to cause a denial of service by sending a specific IS-IS SRv6 packet when SRv6 and Flexible Algorithm are enabled.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.27%

Chance of exploitation in the next 30 days

Percentile

18%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

15-10-202620-10-2026
EPSS score
0.27%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Juniper networks2 products
  • junos os< 23.2R2-S7.7 | ≥ 23.4, < 23.4R2-S8.13 | ≥ 24.2, < 24.2R2-S5.5 | ≥ 24.4, < 24.4R2-S5 | ≥ 25.2, < 25.2R2-S2 | ≥ 25.4, < 25.4R1-S3 | ≥ 26.2, < 26.2R1-S2
  • junos os evolved< 23.2R2-S7.7-EVO | ≥ 23.4, < 23.4R2-S8.11-EVO | ≥ 24.2, < 24.2R2-S5.6-EVO | ≥ 24.4, < 24.4R2-S5-EVO | ≥ 25.2, < 25.2R2-S2-EVO | ≥ 25.4, < 25.4R1-S3-EVO | ≥ 26.2, < 26.2R1-S2-EVO | 23.4X100 | ≥ 25.2X100, < 25.2X100-D35-EVO | ≥ 25.4X300, < 25.4X300-D40-EVO

1 vendor · 2 products

References

1 links