CVE-2024-6198

Unauthenticated code execution via unsafe URI parsing

Published Apr 25, 2025 · Updated Feb 26, 2026

A stack buffer overflow in affected Viasat modems allows remote attackers on the LAN to execute arbitrary code via a crafted HTTP request. The /usr/local/SNORE/index.cgi CGI reads REQUEST_URI and uses sscanf without a length bound to copy two URI fields into fixed stack buffers. No authentication or user interaction is required, but the attacker must reach the modem's LAN or over-the-air interface.

CVSS severity7.7
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A stack buffer overflow in affected Viasat modems allows remote attackers on the LAN to execute arbitrary code via a crafted HTTP request. The /usr/local/SNORE/index.cgi CGI reads REQUEST_URI and uses sscanf without a length bound to copy two URI fields into fixed stack buffers. No authentication or user interaction is required, but the attacker must reach the modem's LAN or over-the-air interface.

The record

CVE
CVE-2024-6198
Published
Apr 25, 2025
Updated
Feb 26, 2026
Vendor
Viasat
Product
SurfBeam 2 RM4100
Classifications
CWE-120, CAPEC-100, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.8.0.4

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Viasat · SurfBeam 2 RM4100version=0 <3.8.0.4
Viasat · RM4200version=0 <3.8.0.4
Viasat · RM5111version=0 <=4.3.0.1
Viasat · EG1000version=0 <=4.3.0.1
Viasat · EM4100version=0 <3.8.0.4
Viasat · EG1020version=0 <=4.3.0.1
Viasat · RG1000version=0 <=4.3.0.1
Viasat · RG1100version=0 <=4.3.0.1
Viasat · RM5110version=0 <=4.3.0.1

Published CVSS scores

7.7ONEKEY GmbHCVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/S:N/AU:Y/R:U/V:C/RE:M/U:Red

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC-100Overflow Buffers
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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