CyberSecBulletin
CVE-2025-26782NVD status: Analyzed

Exynos W920 Firmware: Uncontrolled Resource Consumption

Published Updated By the CyberSecBulletin desk

CVE-2025-26782 is a high-severity uncontrolled resource consumption vulnerability in Exynos W920 Firmware from Samsung, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 0.6% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Check which version of Exynos W920 Firmware you run against the affected versions below, and install the vendor's latest release.
  2. Read the advisory on semiconductor.samsung.com for workarounds and exact fixed builds.
  3. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
SamsungExynos W920 FirmwareNot specified in the recordNot stated
SamsungExynos 1080 FirmwareNot specified in the recordNot stated
SamsungExynos 980 FirmwareNot specified in the recordNot stated
SamsungExynos 990 FirmwareNot specified in the recordNot stated
SamsungExynos 850 FirmwareNot specified in the recordNot stated
SamsungExynos 2200 FirmwareNot specified in the recordNot stated
SamsungExynos 1330 FirmwareNot specified in the recordNot stated
SamsungExynos 1380 FirmwareNot specified in the recordNot stated
SamsungExynos 1480 FirmwareNot specified in the recordNot stated
SamsungExynos 9110 FirmwareNot specified in the recordNot stated
SamsungModem 5400 FirmwareNot specified in the recordNot stated
SamsungModem 5123 FirmwareNot specified in the recordNot stated
SamsungExynos W930 FirmwareNot specified in the recordNot stated
SamsungExynos 1280 FirmwareNot specified in the recordNot stated
SamsungExynos 2100 FirmwareNot specified in the recordNot stated

Version data comes from NVD's product matching. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
NoneNo data is disclosed.
Integrity
NoneNothing can be modified.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by CISA (ADP).

Official description

An issue was discovered in L2 in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 9110, W920, W930, Modem 5123, and Modem 5300. Incorrect handling of RLC AM PDUs leads to a Denial of Service.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource.

How developers prevent this class of flaw

  • Ensure that protocols have specific limits of scale placed on them.
  • Ensure that all failures in resource allocation place the system into a safe posture.

More Uncontrolled Resource Consumption vulnerabilities (CWE-400)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in Exynos W920 Firmware

All Exynos W920 Firmware vulnerabilities

Recent Uncontrolled Resource Consumption vulnerabilities

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