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CVE-2026-100821: firefox-esr (exact versions not specified); +1 more affected products
CVE-2026-100821 affects firefox-esr. EPSS 0.00152 (percentile 0.0377), scored 2026-10-05. Fixed version: 153.4.0esr-1~deb12u1. Fixed version: 153.4.0esr-1~deb13u1. Fixed version: 153.4.0esr-1. Fixed version: 1:140.17.0esr-1~deb12u1. Fixed version: 1:140.17.0esr-1~deb13u1. Fixed version: 1:153.4.0esr-1.
Affected technology
firefox-esr · Exact affected versions not specified by the source
Vendor not specified by the source
firefox-esr · Exact affected versions not specified by the source
Vendor not specified by the source
firefox-esr · Exact affected versions not specified by the source
Vendor not specified by the source
thunderbird · Exact affected versions not specified by the source
Vendor not specified by the source
thunderbird · Exact affected versions not specified by the source
Vendor not specified by the source
thunderbird · Exact affected versions not specified by the source
Vendor not specified by the source
Component: Not specified by the source
Attack conditions (OSV, CVSS 3.1): Network (remote) · No privileges required · User interaction required
What an attacker can do
OSV’s CVSS 3.1 assessment rates confidentiality impact as low; integrity and availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.
- Product
- firefox-esr
- CCR priority
- 0.0 /100 (P5)
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N · OSV.dev
- EPSS
- 0.00152 · percentile 0.0377 · 2026-10-05
- KEV
- no
Provenance
- OSV.dev · Source record · observed 2026-10-06 17:58:42.508367+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-100821.html