7.8

CVE-2021-25487: Samsung Mobile Devices Out-of-Bounds Read Vulnerability

CVSS: 7.8v3.1HighKEVAnalyzed
Published 06-10-2021Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2021-25487 is a high (CVSS 7.8) Out-of-bounds Read vulnerability in Samsung Mobile Devices. It is known to be exploited: CISA lists it, first on 29-06-2023. EPSS estimates a 0.64% chance of exploitation in the next 30 days, higher than 49.3% of scored vulnerabilities.

Overall risk
85/100
0100
Critical · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.64%
0%100%
Low · 0.00 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 06-10-2021
    PublishedVulnerability first disclosed.
  2. 29-06-2023
    Added to CISA KEVSamsung Mobile Devices Out-of-Bounds Read Vulnerability
  3. 20-07-2023
    CISA remediation dueApply updates per vendor instructions or discontinue use of the product if updates are unavailable
  4. 21-10-2025
    Last modifiedVulnerability information updated.

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 metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.64%

Chance of exploitation in the next 30 days

Percentile

49%

Versus all other CVEs

30-day change

0.00 pp

From 0.64% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.64%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
29-06-2023
Federal due date
20-07-2023

CISA required action

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10 nvd.nist.gov/vuln/detail/CVE-2021-25487

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Samsung1 product
  • android8.1 | 9.0:smr-apr-2021-r1 | 9.0:smr-aug-2021-r1 | 9.0:smr-feb-2021-r1 | 9.0:smr-jan-2021-r1 | 9.0:smr-jul-2021-r1 | 9.0:smr-jun-2021-r1 | 9.0:smr-mar-2021-r1 | 9.0:smr-may-2021-r1 | 9.0:smr-sep-2021-r1 | 10.0:smr-apr-2021-r1 | 10.0:smr-aug-2021-r1 | 10.0:smr-feb-2021-r1 | 10.0:smr-jan-2021-r1 | 10.0:smr-jul-2021-r1 | 10.0:smr-jun-2021-r1 | 10.0:smr-mar-2021-r1 | 10.0:smr-may-2021-r1 | 10.0:smr-sep-2021-r1 | 11.0:smr-apr-2021-r1 | 11.0:smr-aug-2021-r1 | 11.0:smr-feb-2021-r1 | 11.0:smr-jan-2021-r1 | 11.0:smr-jul-2021-r1 | 11.0:smr-jun-2021-r1 | 11.0:smr-mar-2021-r1 | 11.0:smr-may-2021-r1 | 11.0:smr-sep-2021-r1
Samsung mobile1 product

2 vendors · 2 products

References

2 links