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CVE-2025-27891

CRITICALCVSS 9.1/10EPSS 0.40%

Last modified

CVE-2025-27891 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. An issue was discovered in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, W920, W930, W1000, Modem 5123, Modem 5300, Modem 5400. The lack of a length check leads to out-of-bounds reads via malformed NAS packets.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

An issue was discovered in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, W920, W930, W1000, Modem 5123, Modem 5300, Modem 5400. The lack of a length check leads to out-of-bounds reads via malformed NAS packets.

Metrics

CVSS 3.1
9.1/10

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

EPSS Probability
0.40%

31.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
SamsungExynos 980 FirmwareAll versions
SamsungExynos 990 FirmwareAll versions
SamsungExynos 850 FirmwareAll versions
SamsungExynos 1080 FirmwareAll versions
SamsungExynos 2100 FirmwareAll versions
SamsungExynos 1280 FirmwareAll versions
SamsungExynos 2200 FirmwareAll versions
SamsungExynos 1330 FirmwareAll versions
SamsungExynos 1380 FirmwareAll versions
SamsungExynos 1480 FirmwareAll versions
SamsungExynos 2400 FirmwareAll versions
SamsungExynos W920 FirmwareAll versions
SamsungExynos W930 FirmwareAll versions
SamsungExynos W1000 FirmwareAll versions
SamsungExynos Modem 5123 FirmwareAll versions
SamsungExynos Modem 5300 FirmwareAll versions
SamsungExynos Modem 5400 FirmwareAll versions

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2025-27891?
An issue was discovered in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, W920, W930, W1000, Modem 5123, Modem 5300, Modem 5400. The lack of a length check leads to out-of-bounds reads via malformed NAS packets.
How severe is CVE-2025-27891?
CVE-2025-27891 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.
How do I fix CVE-2025-27891?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST