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Vulnerability details: VCID-e6yt-xzqm-8qds
Vulnerability ID VCID-e6yt-xzqm-8qds
Aliases CVE-2020-12403
Summary nss: CHACHA20-POLY1305 decryption with undersized tag leads to out-of-bounds read
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-125 Out-of-bounds Read
System Score Found at
cvssv3 7.4 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-12403.json
epss 0.0072 https://api.first.org/data/v1/epss?cve=CVE-2020-12403
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-12403.json
https://api.first.org/data/v1/epss?cve=CVE-2020-12403
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12403
1868931 https://bugzilla.redhat.com/show_bug.cgi?id=1868931
GLSA-202008-08 https://security.gentoo.org/glsa/202008-08
RHSA-2020:4076 https://access.redhat.com/errata/RHSA-2020:4076
RHSA-2021:0538 https://access.redhat.com/errata/RHSA-2021:0538
RHSA-2021:0758 https://access.redhat.com/errata/RHSA-2021:0758
RHSA-2021:0876 https://access.redhat.com/errata/RHSA-2021:0876
RHSA-2021:0949 https://access.redhat.com/errata/RHSA-2021:0949
RHSA-2021:1026 https://access.redhat.com/errata/RHSA-2021:1026
USN-4476-1 https://usn.ubuntu.com/4476-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-12403.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.72792
EPSS Score 0.0072
Published At May 29, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-29T09:20:07.184073+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-12403.json 38.6.0