What is the CVSS score of CVE-2023-26498?

CVE-2023-26498 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 24.3%.

Exynos Modem 5300 Firmware CVE-2023-26498

CRITICAL

Out-of-bounds Write (CWE-787)

2023-03-23 cve@mitre.org

Memory Corruption Buffer Overflow Samsung Exynos Modem 5300 Firmware Exynos Modem 5123 Firmware Exynos 980 Firmware Exynos 1080 Firmware Exynos Auto T5123 Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Mar 23, 2023 - 01:15 nvd

CRITICAL 9.8

DescriptionNVD

An issue was discovered in Samsung Baseband Modem Chipset for Exynos Modem 5123, Exynos Modem 5300, Exynos 980, Exynos 1080, Exynos Auto T5126. Memory corruption can occur due to improper checking of the number of properties while parsing the chatroom attribute in the SDP (Session Description Protocol) module.

AnalysisAI

An issue was discovered in Samsung Baseband Modem Chipset for Exynos Modem 5123, Exynos Modem 5300, Exynos 980, Exynos 1080, Exynos Auto T5126. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. An issue was discovered in Samsung Baseband Modem Chipset for Exynos Modem 5123, Exynos Modem 5300, Exynos 980, Exynos 1080, Exynos Auto T5126. Memory corruption can occur due to improper checking of the number of properties while parsing the chatroom attribute in the SDP (Session Description Protocol) module. Affected products include: Samsung Exynos Modem 5300 Firmware, Samsung Exynos Modem 5123 Firmware, Samsung Exynos 980 Firmware, Samsung Exynos 1080 Firmware, Samsung Exynos Auto T5123 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).