Samsung Semiconductor Exynos Modem 5410 NAS DLTransport input validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.5$0-$5k1.40+

Summaryinfo

A vulnerability, which was classified as critical, has been found in Samsung Semiconductor Exynos 850, Exynos 2100, Exynos 1280, Exynos 2200, Exynos 1330, Exynos 1380, Exynos 1480, Exynos 2400, Exynos 1580, Exynos 2500, Exynos 1680, Exynos W920, Exynos W930, Exynos W1000, Exynos Modem 5123, Exynos Modem 5300, Exynos Modem 5400 and Exynos Modem 5410. The affected element is an unknown function of the component NAS DLTransport. The manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2025-66367. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Samsung Semiconductor Exynos 850, Exynos 2100, Exynos 1280, Exynos 2200, Exynos 1330, Exynos 1380, Exynos 1480, Exynos 2400, Exynos 1580, Exynos 2500, Exynos 1680, Exynos W920, Exynos W930, Exynos W1000, Exynos Modem 5123, Exynos Modem 5300, Exynos Modem 5400 and Exynos Modem 5410. This issue affects an unknown functionality of the component NAS DLTransport. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

Improper handling of NAS DLTransport messages may lead to a baseband crash.

It is possible to read the advisory at semiconductor.samsung.com. The identification of this vulnerability is CVE-2025-66367 since 11/28/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/05/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/28/2025 CVE reserved
11/05/2026 +342 days Advisory disclosed
11/05/2026 +0 days VulDB entry created
11/05/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: semiconductor.samsung.com
Status: Not defined

CNA: samsungsemiconductor
CVE: CVE-2025-66367 (🔒)

GCVE (CVE): GCVE-0-2025-66367
GCVE (VulDB): GCVE-100-431327

Entryinfo

Created: 11/05/2026 04:00
Changes: 11/05/2026 04:00 (51)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!