CVE-2020-22284
A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation...
A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.
- Record
CVE-2020-22284- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-120
- Updated
- 2026-11-02
CVE List No score
A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.
- Record
CVE-2020-22284- Updated
- 2026-11-02
EUVDEUVD-2020-15049 No score
A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.
- Record
EUVD-2020-15049- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4f64-6qh9-pmfj No score
A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation...
A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.
- Record
GHSA-4f64-6qh9-pmfj- Weakness
- CWE-120
- Updated
- 2026-11-02
OSV
A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.
- Record
CVE-2020-22284- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2020-22284
A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.
- Record
DEBIAN-CVE-2020-22284- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-22284
A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.
- Record
UBUNTU-CVE-2020-22284- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
lwipDebian:12 |
before 2.1.3+dfsg1-1 | 2.1.3+dfsg1-1 |
lwipDebian:13 |
before 2.1.3+dfsg1-1 | 2.1.3+dfsg1-1 |
lwipDebian:14 |
before 2.1.3+dfsg1-1 | 2.1.3+dfsg1-1 |
lwipUbuntu:Pro:20.04:LTS |
before 2.1.2+dfsg1-4ubuntu0.1~esm1, plus listed versions 2.1.2-32.1.2-5.12.1.2+dfsg1-12.1.2+dfsg1-4 |
2.1.2+dfsg1-4ubuntu0.1~esm1 |
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-2020-22284 is a high vulnerability (CVSS 7.5) in Lwip Project Lwip, published July 22, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.18%, the 67th percentile. Fixed in lwip 2.1.3+dfsg1-1.