CVE-2021-25489 (GCVE-0-2021-25489)
Vulnerability from cvelistv5 – Published: 2021-10-06 17:10 – Updated: 2025-10-21 23:25Summary
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.
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-04 21:22 UTC
CWE
- CWE-20 - Improper Input Validation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://security.samsungmobile.com/securityUpdate… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Samsung Mobile | Samsung Mobile Devices |
Affected:
O(8.1), P(9.0), Q(10.0), R(11.0) , < SMR Oct-2021 Release 1
(custom)
|
guessed |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: b239eb09-00ef-4b62-a3c6-edac588dec29
Exploited: Yes
Timestamps
First Seen: 2023-06-29
Asserted: 2023-06-29
Scope
Notes: KEV entry: Samsung Mobile Devices Improper Input Validation Vulnerability | Affected: Samsung / Mobile Devices | Description: 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. | Required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable | Due date: 2023-07-20 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10; https://nvd.nist.gov/vuln/detail/CVE-2021-25489
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-20 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Mobile Devices |
| Due Date | 2023-07-20 |
| Date Added | 2023-06-29 |
| Vendorproject | Samsung |
| Vulnerabilityname | Samsung Mobile Devices Improper Input Validation Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 13:24 UTC
| Updated: 2026-02-06 07:53 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: c45bc935-d22b-4878-8288-0665363d53ee
Exploited: Yes
Timestamps
First Seen: 2023-06-29
Asserted: 2023-06-29
Scope
Notes: KEVIntel entry: Assuming radio permission is gained, missing input validation in modem interface driver prior to SMR Oct-2021 Release 1 results in format string... | Affected: Samsung Mobile / Samsung Mobile Devices | CVSS: 3.3 (LOW) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | Assuming radio permission is gained, missing input validation in modem interface driver prior to SMR Oct-2021 Release 1 results in format string... |
| Vendor | Samsung Mobile |
| Product | Samsung Mobile Devices |
| Added Date | 2023-06-29T00:00:00.000Z |
| Cvss Score | 3.3 |
| Epss Score | None |
| Cvss Severity | LOW |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 11:14 UTC
| Updated: 2026-06-23 11:14 UTC
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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