CVE-2021-3889
Use of Out-of-range Pointer Offset in bfabiszewski/libmobi
libmobi is vulnerable to Use of Out-of-range Pointer Offset
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Use of Out-of-range Pointer Offset in bfabiszewski/libmobi
libmobi is vulnerable to Use of Out-of-range Pointer Offset
- Record
CVE-2021-3889- CVSS 3.0
- 7.1 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L - Weakness
- CWE-823
- Updated
- 2026-11-02
EUVDEUVD-2021-27121
libmobi is vulnerable to Use of Out-of-range Pointer Offset
- Record
EUVD-2021-27121- CVSS 3.0
- 7.1 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-842w-vjwh-872m No score
libmobi is vulnerable to Use of Out-of-range Pointer Offset
libmobi is vulnerable to Use of Out-of-range Pointer Offset
- Record
GHSA-842w-vjwh-872m- Weakness
- CWE-119
- Updated
- 2026-11-02
NVD
libmobi is vulnerable to Use of Out-of-range Pointer Offset
- Record
CVE-2021-3889- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H - CVSS 3.0
- 7.1 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L - CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:P/I:N/A:P - Weakness
- CWE-823, CWE-119
- Updated
- 2026-11-02
OSV
libmobi is vulnerable to Use of Out-of-range Pointer Offset
- Record
CVE-2021-3889- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-3889 is a high vulnerability (CVSS 7.1) in Bfabiszewski Bfabiszewski/libmobi, published October 19, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.29%, the 70th percentile. No source names a fixed version.