8.8

CVE-2026-33798: juniper networks junos os Stack-based Buffer Overflow

CVSS: 8.8v3.1HighAwaiting analysis
Published 14-10-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-33798 is a high (CVSS 8.8) Stack-based Buffer Overflow vulnerability in juniper networks junos os. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 27.2% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.35%
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. 15-10-2026
    Last modifiedVulnerability information updated.

Description

A Stack-based Buffer Overflow vulnerability in the srxpfe of Juniper Networks Junos OS and Junos OS Evolved on the SRX Series allows an L2-adjacent attacker to execute arbitrary code as root via high-availability fabric traffic.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.35%

Chance of exploitation in the next 30 days

Percentile

27%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

15-10-202618-10-2026
EPSS score
0.35%

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

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