CVE-2024-13503Public exploitNetwork attack vector

Unauthenticated root code execution via unbounded update parsing

Published Jan 17, 2025 · Updated Jan 17, 2025

Stack buffer overflow in Newtec/iDirect NTC2218, NTC2250, and NTC2299 1.0.1.1 through 2.2.6.19 allows remote attackers to execute code. The swdownload binary's parse_INFO function passes an incoming packet string to unrestricted sscanf, which writes into a fixed-size stack buffer. A single unauthenticated update-signaling packet received through the continuously listening satellite maintenance interface is sufficient, and successful code runs with root privileges.

CVSS severity9.5
Critical
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in Newtec/iDirect NTC2218, NTC2250, and NTC2299 1.0.1.1 through 2.2.6.19 allows remote attackers to execute code. The swdownload binary's parse_INFO function passes an incoming packet string to unrestricted sscanf, which writes into a fixed-size stack buffer. A single unauthenticated update-signaling packet received through the continuously listening satellite maintenance interface is sufficient, and successful code runs with root privileges.

The record

CVE
CVE-2024-13503
Published
Jan 17, 2025
Updated
Jan 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, CAPEC-549, CAPEC-253, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.5NCSC.chCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC-549Local Execution of Code
CAPEC-253Remote Code Inclusion
T1190Exploit Public-Facing Application

Public exploit references

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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