CVSS 6.5 · MEDIUM

CVE-2014-1523

Heap-based buffer overflow in the read_u32 function in Mozilla Firefox before 29.0, Firefox ESR 24.x before 24.5, Thunderbird before 24.5, and SeaMonkey before 2.26 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted JPEG image.

View on NVD

Severity

Score: 6.5(MEDIUM)

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

AV: NETWORK

AC: LOW

PR: NONE

UI: REQUIRED

S: UNCHANGED

C: NONE

I: NONE

A: HIGH

Weakness (CWE): CWE-787

EPSS

Probability of exploitation (next 30 days): 0.0054 (0.5%)

Percentile: 67.7%

EPSS: 2026-05-06

Affects

mozilla:firefoxmozilla:seamonkeymozilla:thunderbirdfedoraproject:fedoradebian:debian_linuxcanonical:ubuntu_linuxredhat:enterprise_linux_desktopredhat:enterprise_linux_eusredhat:enterprise_linux_serverredhat:enterprise_linux_server_ausredhat:enterprise_linux_server_eusredhat:enterprise_linux_server_tusredhat:enterprise_linux_workstationopensuse:opensusesuse:suse_linux_enterprise_server

Technical description

Published: 4/30/2014, 10:49:04 AM

Last modified: 5/6/2026, 10:30:45 PM

References

How to read this card

Actively exploited

KEV (Known Exploited Vulnerabilities) is CISA's catalog of CVEs confirmed as actively exploited in the real world. If a CVE is on KEV, someone is already using it in attacks.

CVSS 10.0

CVSS 10.0 — máxima severidad teórica. Explotable de forma remota, sin privilegios, con impacto total. Aún no confirmada como explotada en el mundo real, pero parchea ya.

AI-recommended

Un modelo de lenguaje revisó el CVE y consideró que afecta a software ampliamente desplegado o herramientas comunes de desarrollo. Un humano del equipo aprobó la publicación antes de que llegara aquí.

Categorías de impacto que evalúa la IA

widely_deployed_infra — kernel Linux, OpenSSL, glibc, k8s, Docker, nginx, OpenSSH.

popular_dev_tooling — Node.js, Python, Go, React, Next.js, librerías comunes de npm/pip.

common_consumer_software — Chrome, Firefox, Windows, macOS, apps móviles populares.

enterprise_saas — GitHub, GitLab, Atlassian, Salesforce, Cisco, Fortinet, Ivanti.

niche_software — CMS regionales, herramientas de hobby, librerías de poco uso.

not_relevant — firmware específico de proveedor, software descontinuado.

EPSS — EPSS (Exploit Prediction Scoring System) by FIRST.org estimates the probability that a CVE will be exploited in the next 30 days. Range is 0 to 1; very fresh CVEs typically score low until evidence accumulates.