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Vulnerability record · CVE-2009-1833 · published 12 June 2009

CVE-2009-1833: Mozilla firefox code injection vulnerability

Mozilla · Firefox

The JavaScript engine in Mozilla Firefox before 3.0.11, Thunderbird before 2.0.0.22, and SeaMonkey before 1.1.17 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors related to (1) js_LeaveSharpObject, (2) ParseXMLSource, and (3) a certain assertion in jsinterp.c; and other vectors.

9.3 CVSS 2.0 High EPSS 9.2% · top 4.8% CWE-94 · Code injection
9.3CVSS 2.0 base score
9.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
80References, 8 tagged exploit
16 Jun 2026Last modified by NVD

Description

The JavaScript engine in Mozilla Firefox before 3.0.11, Thunderbird before 2.0.0.22, and SeaMonkey before 1.1.17 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors related to (1) js_LeaveSharpObject, (2) ParseXMLSource, and (3) a certain assertion in jsinterp.c; and other vectors.

AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://osvdb.org/55152
http://osvdb.org/55153
http://osvdb.org/55154
http://rhn.redhat.com/errata/RHSA-2009-1096.html
http://secunia.com/advisories/35331 Vendor Advisory
http://secunia.com/advisories/35415
http://secunia.com/advisories/35428 Vendor Advisory
http://secunia.com/advisories/35431 Vendor Advisory
http://secunia.com/advisories/35439 Vendor Advisory
http://secunia.com/advisories/35440 Vendor Advisory
http://secunia.com/advisories/35468
http://secunia.com/advisories/35536
http://secunia.com/advisories/35561
http://secunia.com/advisories/35602
http://securitytracker.com/id?1022376 Patch
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.372468
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.425408
http://sunsolve.sun.com/search/document.do?assetkey=1-26-265068-1
http://sunsolve.sun.com/search/document.do?assetkey=1-77-1020800.1-1
http://www.debian.org/security/2009/dsa-1820
http://www.mandriva.com/security/advisories?name=MDVSA-2009:141
http://www.mozilla.org/security/announce/2009/mfsa2009-24.html Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2009-1125.html
http://www.redhat.com/support/errata/RHSA-2009-1126.html
http://www.securityfocus.com/bid/35326
http://www.securityfocus.com/bid/35372
http://www.securitytracker.com/id?1022397
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.454275
http://www.ubuntu.com/usn/usn-782-1
http://www.vupen.com/english/advisories/2009/1572 PatchVendor Advisory
http://www.vupen.com/english/advisories/2009/2152
https://bugzilla.mozilla.org/show_bug.cgi?id=369696 Exploit
https://bugzilla.mozilla.org/show_bug.cgi?id=426520 Exploit
https://bugzilla.mozilla.org/show_bug.cgi?id=427196 Exploit
https://bugzilla.mozilla.org/show_bug.cgi?id=487204
https://bugzilla.redhat.com/show_bug.cgi?id=503570 Exploit
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11487
https://rhn.redhat.com/errata/RHSA-2009-1095.html
https://www.redhat.com/archives/fedora-package-announce/2009-June/msg00574.html
https://www.redhat.com/archives/fedora-package-announce/2009-June/msg00657.html

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2019-11708Mozilla Firefox and Thunderbird sandbox escape via Prompt:Open IPC validation flawThe Prompt:Open IPC message between child and parent processes does not sufficiently vet its parameters, letting a compromised child process cause th…KEVEPSS 56%analysed9.8CVE-2024-9680Mozilla Firefox and Thunderbird use-after-free in Animation timelinesA use-after-free flaw in Animation timelines allows an attacker to execute code in the content process of Firefox and Thunderbird. Mozilla reports ex…KEVEPSS 23%analysed9.8CVE-2010-3765Mozilla Firefox, Thunderbird and SeaMonkey memory corruption via appendChildA memory corruption flaw in Mozilla Firefox, Thunderbird and SeaMonkey arises from incorrect index tracking in nsCSSFrameConstructor::ContentAppended…KEVEPSS 83%analysed9.6CVE-2022-26486Firefox WebGPU IPC use-after-free enables sandbox escapeAn unexpected message in the WebGPU IPC framework triggers a use-after-free in Mozilla Firefox, Firefox ESR, Firefox for Android, Thunderbird and Foc…KEVEPSS 2.3%analysed8.8CVE-2023-5217libvpx VP8 encoding heap buffer overflow exploited via crafted HTMLA heap buffer overflow in the VP8 encoder in libvpx affects Google Chrome before 117.0.5938.132 and libvpx 1.13.1, and is reachable through a crafted…KEVEPSS 49%analysed8.8CVE-2023-4863libwebp Heap Buffer Overflow via Crafted WebP ImageA heap buffer overflow in libwebp allows an out-of-bounds memory write when processing a crafted WebP image. It affects Google Chrome before 116.0.58…KEVEPSS 100%analysed8.8CVE-2022-26485Firefox XSLT parameter removal use-after-freeRemoving an XSLT parameter during processing in Mozilla Firefox could trigger a use-after-free condition. Mozilla reported attacks in the wild abusin…KEVEPSS 14%analysed8.8CVE-2019-17026Firefox and Thunderbird IonMonkey JIT type confusionIncorrect alias information in the IonMonkey JIT compiler when setting array elements can cause a type confusion in Firefox, Firefox ESR and Thunderb…KEVEPSS 46%analysed

Source: NIST National Vulnerability Database (record CVE-2009-1833), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.