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CISA KEV · ACTIVELY EXPLOITED
MEDIUM severity

CVE-2013-1675 — Ubuntu Linux

MEDIUM

CVE-2013-1675 is a medium-severity (CVSS 6.5) CWE-665 vulnerability in canonical ubuntu linux. It is in CISA's Known Exploited Vulnerabilities catalog (added 2022-03-03) — treat it as actively exploited and patch now. A fix is available — see the affected versions and patch details below.

Mozilla Firefox before 21.0, Firefox ESR 17.x before 17.0.6, Thunderbird before 17.0.6, and Thunderbird ESR 17.x before 17.0.6 do not properly initialize data structures for the nsDOMSVGZoomEvent::mPreviousScale…

Published
Updated
Affected
18 products
Patched
See advisory
Exploits
2 known
Exploitation data as of Oct 23, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

  • Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2022-03-03. Federal agencies were required to remediate by 2022-03-24.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2013-1675.

EPSS Exploitation Probability

via FIRST.org ↗
6.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs94th percentile — riskier than 94% of all scored CVEsHighest risk
3.78%5.49%7.20%8.91%4.7%6.7%Apr 26Jul 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2013-1675 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 394,803 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Description

Mozilla Firefox before 21.0, Firefox ESR 17.x before 17.0.6, Thunderbird before 17.0.6, and Thunderbird ESR 17.x before 17.0.6 do not properly initialize data structures for the nsDOMSVGZoomEvent::mPreviousScale and nsDOMSVGZoomEvent::mNewScale functions, which allows remote attackers to obtain sensitive information from process memory via a crafted web site.

Affected Products

18 products · 32 configurations
OS
ubuntu linuxcanonical
3 versions
12.0412.1013.04
OS
debian linuxdebian
1 version
7.0
Application
firefoxmozilla
≥ 17.0 && < 17.0.6
range
Application
thunderbirdmozilla
< 17.0.6
range
Application
thunderbird esrmozilla
≥ 17.0 && < 17.0.6
range
OS
opensuseopensuse
2 versions
12.212.3
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every canonical ubuntu linux deployment and check each version against the affected-products list above.

  2. Fix

    Apply the canonical ubuntu linux security patch or hotfix for CVE-2013-1675 on the affected version, following the vendor advisory for your exact build.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatCritical
ProductFixed inAdvisory
Red Hat Enterprise Linux 5thunderbird-0:17.0.6-1.el5_9RHSA-2013:0821
Red Hat Enterprise Linux 5firefox-0:17.0.6-1.el5_9RHSA-2013:0820

Frequently Asked Questions

Mozilla Firefox before 21.0, Firefox ESR 17.x before 17.0.6, Thunderbird before 17.0.6, and Thunderbird ESR 17.x before 17.0.6 do not properly initialize data structures for the nsDOMSVGZoomEvent::mPreviousScale and nsDOMSVGZoomEvent::mNewScale functions, which allows remote attackers to obtain sensitive information from process memory via a crafted web site.
O3 Security · Runtime Protection

Is CVE-2013-1675 being exploited in your environment?

Detect and block the exploit chain at execution, on systems you cannot patch yet.

CVE-2013-1675: Ubuntu Linux (Medium 6.5, KEV)