CVE-2020-22284
CVE-2020-22284 is a high-severity vulnerability in Lwip Project Lwip with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (64th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-120
- Affected product: Lwip Project Lwip
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2020-22284?
- CVE-2020-22284 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2020-22284 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-22284?
- CVE-2020-22284 affects Lwip Project Lwip. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-22284?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-22284 published?
- CVE-2020-22284 was published on 2021-07-22 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:lwip_project:lwip:2.1.2:*:*:*:*:*:*:*
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