CASCACascade Atlas

Evidence dossier

CVE-2021-25487

CVE-2021-25487

53.0–76.0Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
Oct 6, 2021
Updated
Oct 21, 2025
Evidence coverage
72%
CISA KEVCatalog member

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable

FIRST EPSS0.60%

2026-07-18 · v2026.06.15 · percentile 44.6%

Source stateConflict visible

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

Samsung Mobileoriginal assertion
container

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.

CISA KEVoriginal assertion
observed_exploitation

Samsung Mobile Devices Out-of-Bounds Read Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.005970000000; percentile 0.445800000000

Applicability

Cited product scope

Trace impact →
Samsung MobileSamsung Mobile Devices
[{"status": "affected", "version": "O(8.1), P(9.0), Q(10.0), R(11.0)", "lessThan": "SMR Oct-2021 Release 1", "versionType": "custom"}]unknown
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:10.0:smr-apr-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:10.0:smr-aug-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:10.0:smr-feb-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:10.0:smr-jan-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:10.0:smr-jul-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:10.0:smr-jun-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:10.0:smr-mar-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:10.0:smr-may-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:10.0:smr-sep-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:11.0:smr-apr-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:11.0:smr-aug-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:11.0:smr-feb-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:11.0:smr-jan-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:11.0:smr-jul-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:11.0:smr-jun-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:11.0:smr-mar-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:11.0:smr-may-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:11.0:smr-sep-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:8.1:-:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:9.0:smr-apr-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:9.0:smr-aug-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:9.0:smr-feb-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:9.0:smr-jan-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:9.0:smr-jul-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:9.0:smr-jun-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:9.0:smr-mar-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:9.0:smr-may-2021-r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:samsung:android:9.0:smr-sep-2021-r1:*:*:*:*:*:*supported

Assessments

CVSS by origin

7.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6
nvd@nist.govCVSS 2.0 · role PrimaryAV:L/AC:L/Au:N/C:P/I:P/A:P
7.3
mobile.security@samsung.comCVSS 3.1 · role SecondaryCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
7.3
Samsung MobileCVSS 3.1 · role unknownCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.