CVE-2016-9079

Q: How do I fix CVE-2016-9079?

Published advisories record a fix for 6 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Q: Is CVE-2016-9079 being actively exploited?

Yes. CVE-2016-9079 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2023-07-13. Treat it as a priority whatever its CVSS score says.

Q: How severe is CVE-2016-9079?

CVE-2016-9079 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2016-9079 affect?

Published advisories record a fix for firefox (Debian), firefox (Ubuntu), thunderbird (Ubuntu), DeveloperEdition (Windows application), and 2 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGHCISA KEVEPSS 100th pctl

7.5

CVSS v3

NVD

Description

A use-after-free vulnerability in SVG Animation has been discovered. An exploit built on this vulnerability has been discovered in the wild targeting Firefox and Tor Browser users on Windows. This vulnerability affects Firefox < 50.0.2, Firefox ESR < 45.5.1, and Thunderbird < 45.5.1.

CWE-416Use After Free

How to fix

Remediation Available

firefoxDebian

Fixed in:50.0.2-1CVE-2016-9079

firefoxUbuntu

Fixed in:50.0.2+build1-0ubuntu0.14.04.1USN-3140-1

Fixed in:50.0.2+build1-0ubuntu0.16.04.1USN-3140-1

thunderbirdUbuntu

Fixed in:1:45.5.1+build1-0ubuntu0.14.04.1USN-3141-1

Fixed in:1:45.5.1+build1-0ubuntu0.16.04.1USN-3141-1

DeveloperEditionWindows application

Affected:45.5.1Fixed in:45.5.1Mozilla

Affected:50.0.2Fixed in:50.0.2Mozilla

Mozilla Firefox (en-US)Windows application

Affected:45.5.1Fixed in:45.5.1Mozilla

Affected:50.0.2Fixed in:50.0.2Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:45.5.1Fixed in:45.5.1Mozilla

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

87.60%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability

Mozilla Firefox, Firefox ESR, and Thunderbird contain a use-after-free vulnerability in SVG Animation, targeting Firefox and Tor browser users on Windows.

Apply updates per vendor instructions.

Remediation due: 2023-07-13

References

Exploit3

Vendor Advisory1

mozilla.org

Third-Party Advisory7

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	96%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2021-34833	High	7.8	96%	-	-

Common questions

How do I fix CVE-2016-9079?

Published advisories record a fix for 6 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2016-9079 being actively exploited?

Yes. CVE-2016-9079 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2023-07-13. Treat it as a priority whatever its CVSS score says.

How severe is CVE-2016-9079?

CVE-2016-9079 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2016-9079 affect?

Published advisories record a fix for firefox (Debian), firefox (Ubuntu), thunderbird (Ubuntu), DeveloperEdition (Windows application), and 2 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.