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CVE-2021-25487

Samsung Mobile Devices Out-of-Bounds Read

7.3 HIGHActively exploited (CISA KEV)EPSS 0.64%
  1. Published6 Oct 2021
  2. Added to CISA KEV29 Jun 2023
  3. Remediation due20 Jul 2023
Actively exploited (CISA KEV)

Samsung mobile devices contain an out-of-bounds read vulnerability within the modem interface driver due to a lack of boundary checking of a buffer in set_skb_priv(), leading to remote code execution by dereference of an invalid function pointer.

Added to KEV: 29 Jun 2023Federal remediation due: 20 Jul 2023

Description

Lack of boundary checking of a buffer in set_skb_priv() of modem interface driver prior to SMR Oct-2021 Release 1 allows OOB read and it results in arbitrary code execution by dereference of invalid function pointer.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Affected products

Samsung Android10.0 · 11.0 · 8.1 · 9.0

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2021-25487 being actively exploited?

Yes. CVE-2021-25487 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 29 Jun 2023.

How severe is CVE-2021-25487?

CVE-2021-25487 has a CVSS 3.1 base score of 7.3, rated high. EPSS estimates a 0.64% probability of exploitation.

Which products are affected by CVE-2021-25487?

Affected products include Samsung Android.

How do I fix CVE-2021-25487?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2021-25487 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.