CVE-2024-7538: oFono CUSD AT Command Stack-based Buffer Overflow Code Execution Vulnerability

Routine

HIGH 7.8DOWNGRADE

CVE-2024-7538 is a high-severity flaw (CVSS 7.8) affecting ofono. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

oFono CUSD AT Command Stack-based Buffer Overflow Code Execution Vulnerability. This vulnerability allows local attackers to execute arbitrary code on affected installations of oFono. An attacker must first obtain the ability to execute code on the target modem in order to exploit this vulnerability. The specific flaw exists within the parsing of responses from AT Commands. The issue results from the lack of proper validation of the length of us

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 78%)
CISA exploited list	No
Weakness	CWE-121, CWE-787
Published	2024-08-06
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: ofono project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-08-06 00:15 UTCPublished CVE record published
2026-06-17 08:20 UTCUpdated Record last modified

ofono project ofono DOWNGRADE

Affected: 1.34

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.34

1. Check installed version

apt-cache policy ofono || rpm -q ofono || ofono --version

2. No fixed release: DOWNGRADE to a release before 1.34 (Debian / Ubuntu)

apt-cache madison ofono sudo apt install ofono=<VERSION_BEFORE_1.34> sudo apt-mark hold ofono

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ofono sudo dnf downgrade ofono-<VERSION_BEFORE_1.34> sudo dnf versionlock add ofono

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-7538?

ofono: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-7538 being exploited?

CVE-2024-7538 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-7538 affect?

CVE-2024-7538 affects ofono. Severity is high (CVSS 7.8). oFono CUSD AT Command Stack-based Buffer Overflow Code Execution Vulnerability. This vulnerability allows local attackers to execute arbitrary code on affected installations of oFono. An attacker must first obtain the ability to execute cod

How urgent is CVE-2024-7538?

Priority 33/100. High severity

Related CVEs

CVE-2024-7547 HIGH 7.8 DOWNGRADE oFono SMS Decoder Stack-based Buffer Overflow Privilege Escalation Vulnerability
CVE-2024-7546 HIGH 7.8 DOWNGRADE oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation Vulnerability
CVE-2024-7545 HIGH 7.8 DOWNGRADE oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation Vulnerability
CVE-2024-7544 HIGH 7.8 DOWNGRADE oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation Vulnerability
CVE-2024-7543 HIGH 7.8 DOWNGRADE oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation Vulnerability

References

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