CVE-2021-25487Lack 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…
- 7.3HighCVSS base score
- 0.64%Exploitation in 30 daysEPSS · top 49% of all CVEs
- YesKnown exploitedin CISA's KEV since 29 Jun 2023
- YesPublic exploitsa reference or SSVC says so
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.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Samsung Mobile Devices Out-of-Bounds Read Vulnerability.
- Added
- 29 Jun 2023
- Fix due (US federal)
- 20 Jul 2023
- Used by ransomware
- Not known
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 29 Jun 2023.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: it is being exploited.
Timeline
ID reserved
By Samsung Mobile
- 9 months later
· 9 months later
Published
- 21 months later
· 21 months later
Added to CISA KEV
Known exploited in the wild
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| Samsung MobileCNA (assigner) | 3.1 | High7.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N |
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.64% · top 49% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.3.
Affected products
Samsung Mobile · Samsung Mobile Devices
- affected O(8.1), P(9.0), Q(10.0), R(11.0) – < SMR Oct-2021 Release 1
References
References2
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2021-12383 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-25487)Record last updated .