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CVE-2025-59958

22
FAUCET Score

CVE-2025-59958 is an Improper Check for Unusual or Exceptional Conditions vulnerability in Juniper Networks Junos OS Evolved on PTX Series devices. When an output firewall filter with a 'reject' action is configured on WAN or revenue interfaces, matching packets are erroneously sent to the Routing Engine, consuming resources and potentially revealing confidential device information. This vulnerability has a CVSS score of 6.5 (Medium), indicating it can be exploited remotely by an unauthenticated attacker with low attack complexity, leading to confidentiality and availability impacts. There is currently no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 22.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:*
22.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos_os_evolved:22.4:-:*:*:*:*:*:*
22.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos_os_evolved:22.4:r1:*:*:*:*:*:*
22.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos_os_evolved:22.4:r1-s1:*:*:*:*:*:*
22.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos_os_evolved:22.4:r1-s2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.9MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/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:M/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
LOW
VS Integrity
NONE
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 8th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

supportportal.juniper.net / JSA103147
Vendor Advisory