Is CVE-2023-4233 in the CISA KEV catalog?

No. CVE-2023-4233 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-4233?

CVE-2023-4233 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2023-4233?

CVE-2023-4233 has an EPSS score of 1.01% (59th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-4233?

Upgrade ofono on debian 13 to 2.10-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2023-4233

HIGH

8.1

CVSS v3

NVD

Description

A flaw was found in ofono, an Open Source Telephony on Linux. A stack overflow bug is triggered within the sms_decode_address_field() function during the SMS PDU decoding. It is assumed that the attack scenario is accessible from a compromised modem, a malicious base station, or just SMS.

CWE-119Buffer Overflow

How to fix

Remediation Available

ofonoDebian

Fixed in:2.10-1CVE-2023-4233

ofonoUbuntu

Fixed in:1.17.bzr6912+16.04.20160314.3-0ubuntu1+esm1USN-7141-1

Fixed in:1.21-1ubuntu1+esm1USN-7141-1

Fixed in:1.31-2ubuntu1+esm1USN-7141-1

Fixed in:1.31-3ubuntu1.1USN-7141-1

Fixed in:1.31-3ubuntu3.24.04.1USN-7141-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

1.01%probability of exploitation in 30 days

59thpercentile

Moderate risk: more likely to be exploited than 59% of all known CVEs.

References

Issue Tracking1

bugzilla.redhat.com

Other references2

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.