CVE-2015-4521

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

3.50% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 88.1% of scored records. A rank, not a probability.

NVD base score

The NVD has published no score for this record

NVD CVSS vector

No NVD score to derive

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2015-09-24 01:00Z10 YR AGO

Last updated

2024-08-06 06:18Z2 YR AGO

Reserved

2015-06-10

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
• CWE-250Execution with Unnecessary PrivilegesBase

Data version

5.1

Document digest

449246ac0983e745ad463a8f12f7672266a97edccc89f854f4ff445ede27a1b3

• lists.opensuse.orgSUSE-SU-2015:1680http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00004.htmlvendor-advisoryx_refsource_SUSE
• lists.opensuse.orgSUSE-SU-2015:2081http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.htmlvendor-advisoryx_refsource_SUSE
• lists.opensuse.orgopenSUSE-SU-2015:1681http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00005.htmlvendor-advisoryx_refsource_SUSE
• www.ubuntu.comUSN-2754-1http://www.ubuntu.com/usn/USN-2754-1vendor-advisoryx_refsource_UBUNTU
• www.mozilla.orghttp://www.mozilla.org/security/announce/2015/mfsa2015-112.htmlx_refsource_CONFIRM
• www.ubuntu.comUSN-2743-4http://www.ubuntu.com/usn/USN-2743-4vendor-advisoryx_refsource_UBUNTU
• www.oracle.comhttp://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlx_refsource_CONFIRM
• www.oracle.comhttp://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.htmlx_refsource_CONFIRM
• www.ubuntu.comUSN-2743-3http://www.ubuntu.com/usn/USN-2743-3vendor-advisoryx_refsource_UBUNTU
• rhn.redhat.comRHSA-2015:1834http://rhn.redhat.com/errata/RHSA-2015-1834.htmlvendor-advisoryx_refsource_REDHAT
• www.ubuntu.comUSN-2743-2http://www.ubuntu.com/usn/USN-2743-2vendor-advisoryx_refsource_UBUNTU
• www.securitytracker.com1033640http://www.securitytracker.com/id/1033640vdb-entryx_refsource_SECTRACK
• rhn.redhat.comRHSA-2015:1852http://rhn.redhat.com/errata/RHSA-2015-1852.htmlvendor-advisoryx_refsource_REDHAT
• www.debian.orgDSA-3365http://www.debian.org/security/2015/dsa-3365vendor-advisoryx_refsource_DEBIAN
• www.securityfocus.com76816http://www.securityfocus.com/bid/76816vdb-entryx_refsource_BID
• lists.opensuse.orgSUSE-SU-2015:1703http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00007.htmlvendor-advisoryx_refsource_SUSE
• lists.opensuse.orgopenSUSE-SU-2015:1679http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00003.htmlvendor-advisoryx_refsource_SUSE
• lists.opensuse.orgopenSUSE-SU-2015:1658http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00000.htmlvendor-advisoryx_refsource_SUSE
• bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1170246x_refsource_CONFIRM
• www.ubuntu.comUSN-2743-1http://www.ubuntu.com/usn/USN-2743-1vendor-advisoryx_refsource_UBUNTU