Exploitation evidence
Known exploited · CISA KEV listed
Added 2023-06-29. Ransomware campaign use: Unknown.
CISA required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable
CISA due date: 2023-07-20. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Samsung Mobile / Samsung Mobile Devices
Default status: Not specified
- affected: O(8.1), P(9.0), Q(10.0), R(11.0) to < SMR Oct-2021 Release 1 (custom)
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.00531,
"percentile": 0.45355
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.00531,
"percentile": 0.45192
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.00531,
"percentile": 0.45135
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.00531,
"percentile": 0.45118
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.00531,
"percentile": 0.45095
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.00531,
"percentile": 0.4504
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.00531,
"percentile": 0.4501
}06 Nov 2026, 00:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
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"url": "https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10"
}
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"title": "CVE Program Container"
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{
"metrics": [
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"Exploitation": "active"
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{
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{
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"role": "CISA Coordinator",
"timestamp": "2025-02-04T21:22:54.293462Z",
"version": "2.0.3"
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"type": "ssvc"
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},
{
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"cna": {
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"versions": [
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]
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],
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"value": "Assuming radio permission is gained, missing input validation in modem interface driver prior to SMR Oct-2021 Release 1 results in format string bug leading to kernel panic."
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],
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},
"cveMetadata": {
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"assignerShortName": "Samsung Mobile",
"cveId": "CVE-2021-25489",
"datePublished": "2021-10-06T17:10:39.000Z",
"dateReserved": "2021-01-19T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:25:30.375Z",
"state": "PUBLISHED"
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}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.00531,
"percentile": 0.44986
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.00531,
"percentile": 0.44911
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.00531,
"percentile": 0.44864
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2021-25489",
"cwes": [
"CWE-20"
],
"dateAdded": "2023-06-29",
"dueDate": "2023-07-20",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10; https://nvd.nist.gov/vuln/detail/CVE-2021-25489",
"product": "Mobile Devices",
"requiredAction": "Apply updates per vendor instructions or discontinue use of the product if updates are unavailable",
"shortDescription": "Samsung mobile devices contain an improper input validation vulnerability within the modem interface driver that results in a format string bug leading to kernel panic.",
"vendorProject": "Samsung",
"vulnerabilityName": "Samsung Mobile Devices Improper Input Validation Vulnerability"
}