CVE-2020-8252

HIGHNVD 7.87.8—Trending — 4 sources updated this week

7.8

The implementation of realpath in libuv < 10.22.1, < 12.18.4, and < 14.9.0 used within Node.js incorrectly determined the buffer size which can result in a buffer overflow if the resolved path is longer than 256 bytes.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 39.3%
KEV: Not listed

Published

September 18, 2020

Last Modified

November 21, 2024

References (16)

support@hackeronehttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00011.html
support@hackeronehttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00023.html
support@hackeronehttps://hackerone.com/reports/965914
support@hackeronehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/
support@hackeronehttps://nodejs.org/en/blog/vulnerability/september-2020-security-releases/
support@hackeronehttps://security.gentoo.org/glsa/202009-15
support@hackeronehttps://security.netapp.com/advisory/ntap-20201009-0004/
support@hackeronehttps://usn.ubuntu.com/4548-1/
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00011.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00023.html
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/965914
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/
af854a3a-2127-422b-91ae-364da2661108https://nodejs.org/en/blog/vulnerability/september-2020-security-releases/
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202009-15
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20201009-0004/

Patch Availability(6)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	libuv1-dev (1.34.2-1ubuntu1.1) @ focal	2026-05-23	ubuntu
redhat	nodejs:10-8030020210118191659.229f0a1c	2021-02-16	redhat
redhat	rh-nodejs10-nodejs-0:10.23.1-2.el7	2021-02-15	redhat
redhat	rh-nodejs12-nodejs-0:12.18.4-3.el7	2020-11-12	redhat
redhat	nodejs:12-8010020201006223055.c27ad7f8	2020-11-04	redhat
redhat	nodejs:12-8020020201007080935.4cda2c84	2020-10-19	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

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

All Vendor Advisories

(6)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

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
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-23 07:32 UTCEG score recompute
2026-05-23 07:32 UTCVendor advisory
2026-05-23 07:32 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2020-8252?

CVE-2020-8252 is a high vulnerability published on September 18, 2020. The implementation of realpath in libuv < 10.22.1, < 12.18.4, and < 14.9.0 used within Node.js incorrectly determined the buffer size which can result in a buffer overflow if the resolved path is longer than 256 bytes.

When was CVE-2020-8252 disclosed?

CVE-2020-8252 was first published in the National Vulnerability Database on September 18, 2020, 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-2020-8252 actively exploited?

CVE-2020-8252 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 39.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-8252?

CVE-2020-8252 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2020-8252?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-8252, 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-2020-8252

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CVE-2020-8252

Published

Last Modified

References (16)

Patch Availability(6)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-8252?

Same vendor

Same CWE

CVE-2020-8252

📅 Published

🔄 Last Modified

🔗 References (16)

Patch Availability(6)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-8252?

🔗 Related CVEs(same vendor + same CWE)

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Last Modified

References (16)

Frequently asked(5)

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