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CVE-2020-8252

26
FAUCET Score

CVE-2020-8252 describes a buffer overflow vulnerability in the realpath implementation of libuv, affecting Node.js versions prior to 10.22.1, 12.18.4, and 14.9.0, as well as various Fedora and openSUSE distributions. This flaw, rated High severity (CVSS 7.8), allows a local attacker to achieve high confidentiality, integrity, and availability impacts if a resolved path exceeds 256 bytes. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 10.0.0, < 10.22.1CPE matchmatch criteria
cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*
>= 12.0.0, < 12.18.4CPE matchmatch criteria
cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*
>= 14.0.0, < 14.9.0CPE matchmatch criteria
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*
15.2CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.71%
Probability of exploitation in next 30 days
EPSS Percentile
49.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0071 is in the 87th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: nodejs:12-8020020201007080935.4cda2c84
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: nodejs:10-8030020210118191659.229f0a1c
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.1 Extended Update SupportFixed in: nodejs:12-8010020201006223055.c27ad7f8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-nodejs12-nodejs-0:12.18.4-3.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-nodejs10-nodejs-0:10.23.1-2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-nodejs12-nodejs-0:12.18.4-3.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-nodejs10-nodejs-0:10.23.1-2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-nodejs12-nodejs-0:12.18.4-3.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-nodejs10-nodejs-0:10.23.1-2.el7
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Quay 3Fixed in: quay

Vendor Advisories (1)

redhatCVE-2020-8252Important

libuv: buffer overflow in realpath

Sep 15, 2020

References

lists.opensuse.org / opensuse-security-announce/2020-10/msg00011.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2020-10/msg00023.html
Mailing ListThird Party Advisory
hackerone.com / reports/965914
Permissions RequiredThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6
nodejs.org / en/blog/vulnerability/september-2020-security-releases
Vendor Advisory
security.gentoo.org / glsa/202009-15
Third Party Advisory
security.netapp.com / advisory/ntap-20201009-0004
Third Party Advisory
usn.ubuntu.com / 4548-1
Third Party Advisory