CVE-2024-7539

Root code execution via CUSD response overflow

Published Aug 5, 2024 · Updated Aug 6, 2024

Stack-based buffer overflow in oFono 1.34 allows local users with modem code execution to run arbitrary code as root through CUSD responses. The CUSD response parser copies attacker-controlled response data into a fixed-size stack buffer without validating its length. Exploitation requires prior code execution on the target modem and yields arbitrary code execution in the root daemon context.

CVSS severity7.8
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in oFono 1.34 allows local users with modem code execution to run arbitrary code as root through CUSD responses. The CUSD response parser copies attacker-controlled response data into a fixed-size stack buffer without validating its length. Exploitation requires prior code execution on the target modem and yields arbitrary code execution in the root daemon context.

The record

CVE
CVE-2024-7539
Published
Aug 5, 2024
Updated
Aug 6, 2024
Vendor
oFono
Product
oFono
Classifications
CWE-121, CWE-787, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record 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=1.34

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

oFono · oFonoversion=1.34

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A: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.

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No observations available

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

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-787Out-of-bounds Write
T1068Exploitation for Privilege Escalation

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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