CVE-2020-22283

HIGHNVD 7.57.5—

7.5

A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundation lwIP version git head allows attackers to access sensitive information via a crafted ICMPv6 packet.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 52.1%
KEV: Not listed

Published

July 22, 2021

Last Modified

November 21, 2024

References (4)

cve@mitrehttps://lists.debian.org/debian-lts-announce/2023/11/msg00011.html
cve@mitrehttps://savannah.nongnu.org/bugs/index.php?58553
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/11/msg00011.html
af854a3a-2127-422b-91ae-364da2661108https://savannah.nongnu.org/bugs/index.php?58553

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

Data Freshness Timeline

(refreshed 9× in last 7d / 9× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:06 UTCEG score recompute
2026-05-26 13:06 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 04:07 UTCOSV refresh
2026-05-24 16:48 UTCepss_batch

Frequently asked(5)

What is CVE-2020-22283?

CVE-2020-22283 is a high vulnerability published on July 22, 2021. A buffer overflow vulnerability in the icmp6sendresponsewithaddrsandnetif() function of Free Software Foundation lwIP version git head allows attackers to access sensitive information via a crafted ICMPv6 packet.

When was CVE-2020-22283 disclosed?

CVE-2020-22283 was first published in the National Vulnerability Database on July 22, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-22283 actively exploited?

CVE-2020-22283 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 52.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-22283?

CVE-2020-22283 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2020-22283?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-22283, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-22283

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CVE-2020-22283

📅 Published

🔄 Last Modified

🔗 References (4)