Out-of-bounds Read Affecting nss-sysinit package, versions <0:3.90.0-2.amzn2.0.3


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.43% (35th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2-NSSSYSINIT-16881319
  • published27 May 2026
  • disclosed21 Apr 2026

Introduced: 21 Apr 2026

CVE-2026-6766  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 nss-sysinit to version 0:3.90.0-2.amzn2.0.3 or higher.
This issue was patched in ALAS2-2026-3304.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nss-sysinit package and not the nss-sysinit package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

CVSS Base Scores

version 3.1