CVE-2025-34117

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

19.92% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 97.2% of scored records. A rank, not a probability.

NVD base score

9.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-07-16 21:02Z1 YR AGO

Last updated

2026-04-07 14:09Z5 MO AGO

Reserved

2025-04-15

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Critical (CVSS 9.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Weaknesses

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base
• CWE-306Missing Authentication for Critical FunctionBase
• CWE-912Hidden FunctionalityClass

Data version

5.2

Document digest

39be207bfdfb2cbb03788ea376bae539b5f59aad909556e6bcb56058a240a271

• web.archive.orghttps://web.archive.org/web/20140828114943/http://blog.trendmicro.com/trendlabs-security-intelligence/netis-routers-leave-wide-open-backdoor/third-party-advisorytechnical-description
• www.seebug.orghttps://www.seebug.org/vuldb/ssvid-90227third-party-advisorytechnical-description
• raw.githubusercontent.comhttps://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/misc/netcore_udp_53413_backdoor.rbexploit
• www.shadowserver.orghttps://www.shadowserver.org/what-we-do/network-reporting/netcore-netis-router-vulnerability-scan-report/third-party-advisory
• vulners.comhttps://vulners.com/metasploit/MSF:EXPLOIT-LINUX-MISC-NETCORE_UDP_53413_BACKDOOR-third-party-advisoryexploit
• www.vulncheck.comhttps://www.vulncheck.com/advisories/netcore-netis-routers-backdoor-rcethird-party-advisory
• www.exploit-db.comhttps://www.exploit-db.com/exploits/43387exploit