01 Record

CVE-2012-5840

Use-after-free vulnerability in the nsTextEditorState::PrepareEditor function in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before

UnratedPUBLISHEDCNA: mitre

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

Use-after-free vulnerability in the nsTextEditorState::PrepareEditor function in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before

03 Exploitation and scoring

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: 6.07% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 93.2% 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 2026-06-16.
Red Hat severity: Critical. 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.

04 Metadata

Published

2012-11-21 11:00Z13 YR AGO

Last updated

2024-08-06 21:21Z2 YR AGO

Reserved

2012-11-05

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-416Use After FreeVariant
CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

4f8eab57825cdb75bc37cf0fa4480f776f107e4bc473f6d3c8aedd59e283b8ca

05 Affected products

VendorProductVersionsPlatforms

canonicalubuntu_linuxNot specified—

mozillafirefoxNot specified—

mozillaseamonkeyNot specified—

mozillathunderbirdNot specified—

mozillathunderbird_esrNot specified—

opensuseopensuseNot specified—

redhatenterprise_linuxNot specified—

redhatenterprise_linux_desktopNot specified—

redhatenterprise_linux_eusNot specified—

redhatenterprise_linux_serverNot specified—

redhatenterprise_linux_workstationNot specified—

suselinux_enterprise_desktopNot specified—

suselinux_enterprise_serverNot specified—

suselinux_enterprise_software_development_kitNot specified—

06 References

www.ubuntu.comUSN-1638-3http://www.ubuntu.com/usn/USN-1638-3vendor-advisoryx_refsource_UBUNTU
oval.cisecurity.orgoval:org.mitre.oval:def:16904https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16904vdb-entrysignaturex_refsource_OVAL
secunia.com51370http://secunia.com/advisories/51370third-party-advisoryx_refsource_SECUNIA
osvdb.org87606http://osvdb.org/87606vdb-entryx_refsource_OSVDB
www.ubuntu.comUSN-1638-2http://www.ubuntu.com/usn/USN-1638-2vendor-advisoryx_refsource_UBUNTU
lists.opensuse.orgopenSUSE-SU-2012:1586http://lists.opensuse.org/opensuse-updates/2012-11/msg00093.htmlvendor-advisoryx_refsource_SUSE
www.ubuntu.comUSN-1636-1http://www.ubuntu.com/usn/USN-1636-1vendor-advisoryx_refsource_UBUNTU
lists.opensuse.orgopenSUSE-SU-2013:0175http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00022.htmlvendor-advisoryx_refsource_SUSE
rhn.redhat.comRHSA-2012:1483http://rhn.redhat.com/errata/RHSA-2012-1483.htmlvendor-advisoryx_refsource_REDHAT
exchange.xforce.ibmcloud.commozilla-prepareeditor-code-exec(80190)https://exchange.xforce.ibmcloud.com/vulnerabilities/80190vdb-entryx_refsource_XF
www.palemoon.orghttp://www.palemoon.org/releasenotes-ng.shtmlx_refsource_CONFIRM
rhn.redhat.comRHSA-2012:1482http://rhn.redhat.com/errata/RHSA-2012-1482.htmlvendor-advisoryx_refsource_REDHAT
secunia.com51434http://secunia.com/advisories/51434third-party-advisoryx_refsource_SECUNIA
lists.opensuse.orgopenSUSE-SU-2012:1583http://lists.opensuse.org/opensuse-updates/2012-11/msg00090.htmlvendor-advisoryx_refsource_SUSE
secunia.com51439http://secunia.com/advisories/51439third-party-advisoryx_refsource_SECUNIA
secunia.com51440http://secunia.com/advisories/51440third-party-advisoryx_refsource_SECUNIA
www.ubuntu.comUSN-1638-1http://www.ubuntu.com/usn/USN-1638-1vendor-advisoryx_refsource_UBUNTU
lists.opensuse.orgSUSE-SU-2012:1592http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00021.htmlvendor-advisoryx_refsource_SUSE
secunia.com51359http://secunia.com/advisories/51359third-party-advisoryx_refsource_SECUNIA
www.mandriva.comMDVSA-2012:173http://www.mandriva.com/security/advisories?name=MDVSA-2012:173vendor-advisoryx_refsource_MANDRIVA
lists.opensuse.orgopenSUSE-SU-2012:1585http://lists.opensuse.org/opensuse-updates/2012-11/msg00092.htmlvendor-advisoryx_refsource_SUSE
bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=805287x_refsource_CONFIRM
secunia.com51381http://secunia.com/advisories/51381third-party-advisoryx_refsource_SECUNIA
www.securityfocus.com56635http://www.securityfocus.com/bid/56635vdb-entryx_refsource_BID
secunia.com51369http://secunia.com/advisories/51369third-party-advisoryx_refsource_SECUNIA
www.mozilla.orghttp://www.mozilla.org/security/announce/2012/mfsa2012-105.htmlx_refsource_CONFIRM
secunia.com51360http://secunia.com/advisories/51360third-party-advisoryx_refsource_SECUNIA