CVE-2025-57835 Samsung CVE debrief

Who should care

Defenders responsible for Samsung Exynos-based systems, including mobile and wearable devices, should assess exposure and apply security updates to prevent potential system crashes.

Why it matters

CVE-2025-57835 is a high-severity vulnerability in Samsung Exynos processors that can cause system crashes. Defenders should verify exposure, apply security updates, and monitor for potential impacts.

• System crashes due to malformed RRCReconfiguration messages
• Potential disruption of critical services
• Need for verification of affected versions and exposure
• Priority for applying vendor-provided security updates

Technical summary

The vulnerability is caused by improper memory initialization in Samsung's Mobile Processor, Wearable Processor, and Modem Exynos series. This leads to an illegal memory access when a malformed RRCReconfiguration message is received, causing a system crash. The affected Exynos chipsets include 980, 990, 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, 1580, 2500, 9110, W920, W930, W1000, Modem 5123, Modem 5300, and Modem 5400. Defenders should prioritize verifying affected versions and assessing exposure in their inventory.

Defensive priority

Defenders should prioritize verifying affected versions and assessing exposure in their inventory, then apply vendor-provided security updates.

Recommended defensive actions

• Verify affected versions and assess exposure in inventory
• Apply vendor-provided security updates
• Monitor system crashes and malformed RRCReconfiguration messages
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, including its description, CVSS score, and affected products. Samsung has also provided vendor advisories for this issue. The NVD entry is currently Analyzed. Defenders should verify affected versions and assess exposure in their inventory. The CVE Program record and NIST NVD detail page offer source-provided CVE metadata and official vulnerability assessment.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.