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CVE-2024-7539

23
FAUCET Score

CVE-2024-7539 is a stack-based buffer overflow vulnerability in oFono, specifically affecting the parsing of AT+CUSD command responses. This flaw allows a local attacker to execute arbitrary code with root privileges due to insufficient validation of user-supplied data length. Rated 7.8 HIGH on the CVSS scale, exploitation requires prior code execution on the target modem, but once achieved, it can lead to full compromise. Currently, there is no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1.34CPE matchmatch criteria
cpe:2.3:a:ofono_project:ofono:1.34:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.29%
Probability of exploitation in next 30 days
EPSS Percentile
21.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0029 is in the 58th percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

ubuntupatch availablevia ubuntu_usn
Product: ofono (bionic)Fixed in: 1.21-1ubuntu1+esm3
ubuntupatch availablevia ubuntu_usn
Product: ofono (focal)Fixed in: 1.31-2ubuntu1+esm3
ubuntupatch availablevia ubuntu_usn
Product: ofono (jammy)Fixed in: 1.31-3ubuntu1.2+esm1
ubuntupatch availablevia ubuntu_usn
Product: ofono (noble)Fixed in: 1.31-3ubuntu3.24.04.2+esm1
ubuntupatch availablevia ubuntu_usn
Product: ofono (xenial)Fixed in: 1.17.bzr6912+16.04.20160314.3-0ubuntu1+esm3

Vendor Advisories (1)

ubuntuUSN-8178-1

oFono vulnerabilities

Apr 16, 2026

References

zerodayinitiative.com / advisories/ZDI-24-1079
Third Party Advisory