CVE-2016-9079

CRITICALNVD 7.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-06-22), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.5 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 88%CVSS: 7.5Exploit: cisa kev · ssvc active · Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
7.5
EG Score
9.0CRITICALhigh confidence
EG Risk
96
EG Risk 96/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability100% × 15%
CISA SSVC: Attend at low or medium mission impact; Act at high (mission-essential systems).
Action: A fix is available. Apply it sooner than your standard update timelines at low or medium mission impact and as soon as possible at high.
EPSS PROB
88%
EPSS %ILE
99th
KEV
⚠ Exploited

CISA SSVCAttend at low or medium mission impact; Act at high (mission-essential systems).

A fix is available. Apply it sooner than your standard update timelines at low or medium mission impact and as soon as possible at high.

Exploitation active (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

June 11, 2018

Last Modified

November 4, 2025

Advisory Details (9)

Auto-updated Jun 5, 2026
🔬 Proof of concept available. Patch available.
generic🟡 PoC Available

Firefox 50.0.1 - ASM.JS JIT-Spray Remote Code Execution - Windows remote Exploit

https://www.exploit-db.com/exploits/42327/
generic🟡 PoC Available

Mozilla Firefox < 50.0.2 - 'nsSMILTimeContainer::NotifyTimeChange()' Remote Code Execution (Metasploit) - Windows remote Exploit

https://www.exploit-db.com/exploits/41151/
generic

Mozilla SeaMonkey: Multiple vulnerabilities (GLSA 201701-35) — Gentoo security

https://security.gentoo.org/glsa/201701-35
generic

Mozilla Firefox, Thunderbird: Multiple vulnerabilities (GLSA 201701-15) — Gentoo security

https://security.gentoo.org/glsa/201701-15
generic

1321066 - (CVE-2016-9079) Reported Firefox SVG 0-day (Iterator invalidation in nsSMILTimeContainer::NotifyTimeChange())

https://bugzilla.mozilla.org/show_bug.cgi?id=1321066
generic
http://www.securitytracker.com/id/1037370
generic
http://www.securityfocus.com/bid/94591
generic
http://rhn.redhat.com/errata/RHSA-2016-2850.html
generic
http://rhn.redhat.com/errata/RHSA-2016-2843.html

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuxul-ext-lightning (1:45.5.1+build1-0ubuntu0.16.04.1) @ xenial2026-10-10ubuntu
ubuntufirefox-testsuite (50.0.2+build1-0ubuntu0.14.04.1) @ trusty2026-10-10ubuntu
redhatthunderbird-0:45.5.1-1.el7_32016-12-05redhat
redhatfirefox-0:45.5.1-1.el7_32016-12-01redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(8 across 6 ecosystems)
Debian:7(2)
PackageVulnerable rangeFix by version rangeDependents
firefox-esr45.0.1esr-1 ... 45.5.0esr-1~deb8u1 (21 versions)
  • every version up to 45.5.1esr-1~deb7u1: fixed in 45.5.1esr-1~deb7u1
—
icedove10.0.12-1 ... 44.0~b1-1 (121 versions)
  • every version up to 1:45.5.1-1~deb7u1: fixed in 1:45.5.1-1~deb7u1
—
Debian:8(2)
PackageVulnerable rangeFix by version rangeDependents
firefox-esr45.0.1esr-1 ... 45.5.1esr-1~deb7u1 (22 versions)
  • every version up to 45.5.1esr-1~deb8u1: fixed in 45.5.1esr-1~deb8u1
—
icedove1:45.0~b4-1 ... 44.0~b1-1 (68 versions)
  • every version up to 1:45.5.1-1~deb8u1: fixed in 1:45.5.1-1~deb8u1
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
firefox-esr—
  • every version up to 45.5.1esr-1: fixed in 45.5.1esr-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
firefox-esr—
  • every version up to 45.5.1esr-1: fixed in 45.5.1esr-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
firefox-esr—
  • every version up to 45.5.1esr-1: fixed in 45.5.1esr-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
firefox-esr—
  • every version up to 45.5.1esr-1: fixed in 45.5.1esr-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(4)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 99× in last 7d / 429× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 1,846 total refreshes for this CVE.

  1. 2026-10-10 12:54 UTCVendor advisory
  2. 2026-10-10 12:54 UTCGHSA enrichment
  3. 2026-10-10 09:14 UTCVendor advisory
  4. 2026-10-10 09:13 UTCGHSA enrichment
  5. 2026-10-10 05:32 UTCVendor advisory
  6. 2026-10-10 05:32 UTCGHSA enrichment
  7. 2026-10-10 01:50 UTCVendor advisory
  8. 2026-10-10 01:50 UTCGHSA enrichment
  9. 2026-10-09 22:09 UTCVendor advisory
  10. 2026-10-09 22:09 UTCGHSA enrichment
  11. 2026-10-09 18:28 UTCVendor advisory
  12. 2026-10-09 18:28 UTCGHSA enrichment
  13. 2026-10-09 14:45 UTCVendor advisory
  14. 2026-10-09 14:44 UTCGHSA enrichment
  15. 2026-10-09 11:02 UTCVendor advisory
  16. 2026-10-09 11:02 UTCGHSA enrichment
  17. 2026-10-09 07:23 UTCVendor advisory
  18. 2026-10-09 07:23 UTCGHSA enrichment
  19. 2026-10-09 03:42 UTCVendor advisory
  20. 2026-10-09 03:42 UTCGHSA enrichment
  21. 2026-10-09 00:02 UTCVendor advisory
  22. 2026-10-09 00:02 UTCGHSA enrichment
  23. 2026-10-08 20:22 UTCVendor advisory
  24. 2026-10-08 20:22 UTCGHSA enrichment
  25. 2026-10-08 16:42 UTCVendor advisory
Show 75 more
  1. 2026-10-08 16:42 UTCGHSA enrichment
  2. 2026-10-08 13:02 UTCVendor advisory
  3. 2026-10-08 13:02 UTCGHSA enrichment
  4. 2026-10-08 09:21 UTCVendor advisory
  5. 2026-10-08 09:20 UTCGHSA enrichment
  6. 2026-10-08 05:40 UTCVendor advisory
  7. 2026-10-08 05:40 UTCGHSA enrichment
  8. 2026-10-08 02:00 UTCEG score recompute
  9. 2026-10-08 02:00 UTCVendor advisory
  10. 2026-10-08 02:00 UTCGHSA enrichment
  11. 2026-10-07 23:40 UTCEPSS rescore
  12. 2026-10-07 22:20 UTCVendor advisory
  13. 2026-10-07 22:20 UTCGHSA enrichment
  14. 2026-10-07 18:40 UTCVendor advisory
  15. 2026-10-07 18:40 UTCGHSA enrichment
  16. 2026-10-07 15:00 UTCVendor advisory
  17. 2026-10-07 15:00 UTCGHSA enrichment
  18. 2026-10-07 11:20 UTCVendor advisory
  19. 2026-10-07 11:20 UTCGHSA enrichment
  20. 2026-10-07 07:40 UTCVendor advisory
  21. 2026-10-07 07:40 UTCGHSA enrichment
  22. 2026-10-07 04:00 UTCVendor advisory
  23. 2026-10-07 04:00 UTCGHSA enrichment
  24. 2026-10-07 00:20 UTCVendor advisory
  25. 2026-10-07 00:20 UTCGHSA enrichment
  26. 2026-10-06 20:40 UTCVendor advisory
  27. 2026-10-06 20:40 UTCGHSA enrichment
  28. 2026-10-06 17:00 UTCEG score recompute
  29. 2026-10-06 17:00 UTCVendor advisory
  30. 2026-10-06 17:00 UTCGHSA enrichment
  31. 2026-10-06 15:11 UTCEPSS rescore
  32. 2026-10-06 13:21 UTCVendor advisory
  33. 2026-10-06 13:21 UTCGHSA enrichment
  34. 2026-10-06 09:41 UTCVendor advisory
  35. 2026-10-06 09:41 UTCGHSA enrichment
  36. 2026-10-06 05:58 UTCVendor advisory
  37. 2026-10-06 05:57 UTCGHSA enrichment
  38. 2026-10-06 05:53 UTCGHSA enrichment
  39. 2026-10-06 05:52 UTCVendor advisory
  40. 2026-10-06 05:52 UTCGHSA enrichment
  41. 2026-10-06 02:13 UTCVendor advisory
  42. 2026-10-06 02:12 UTCGHSA enrichment
  43. 2026-10-05 22:31 UTCVendor advisory
  44. 2026-10-05 22:31 UTCGHSA enrichment
  45. 2026-10-05 18:51 UTCVendor advisory
  46. 2026-10-05 18:51 UTCGHSA enrichment
  47. 2026-10-05 15:12 UTCVendor advisory
  48. 2026-10-05 15:12 UTCGHSA enrichment
  49. 2026-10-05 11:30 UTCVendor advisory
  50. 2026-10-05 11:29 UTCGHSA enrichment
  51. 2026-10-05 07:50 UTCVendor advisory
  52. 2026-10-05 07:50 UTCGHSA enrichment
  53. 2026-10-05 04:10 UTCVendor advisory
  54. 2026-10-05 04:10 UTCGHSA enrichment
  55. 2026-10-05 00:27 UTCVendor advisory
  56. 2026-10-05 00:27 UTCGHSA enrichment
  57. 2026-10-04 20:46 UTCVendor advisory
  58. 2026-10-04 20:46 UTCGHSA enrichment
  59. 2026-10-04 17:06 UTCVendor advisory
  60. 2026-10-04 17:05 UTCGHSA enrichment
  61. 2026-10-04 13:24 UTCVendor advisory
  62. 2026-10-04 13:24 UTCGHSA enrichment
  63. 2026-10-04 09:44 UTCVendor advisory
  64. 2026-10-04 09:44 UTCGHSA enrichment
  65. 2026-10-04 06:04 UTCVendor advisory
  66. 2026-10-04 06:04 UTCGHSA enrichment
  67. 2026-10-04 02:25 UTCVendor advisory
  68. 2026-10-04 02:25 UTCGHSA enrichment
  69. 2026-10-03 22:45 UTCVendor advisory
  70. 2026-10-03 22:45 UTCGHSA enrichment
  71. 2026-10-03 19:05 UTCVendor advisory
  72. 2026-10-03 19:05 UTCGHSA enrichment
  73. 2026-10-03 15:22 UTCVendor advisory
  74. 2026-10-03 15:22 UTCGHSA enrichment
  75. 2026-10-03 11:39 UTCVendor advisory

Publicly available exploits

(4 references)

Working exploit code is in the public domain (1 Metasploit module) (1 GitHub PoC) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-41151✓ verified
    First seen Jan 24, 2017

    Mozilla Firefox < 50.0.2 - 'nsSMILTimeContainer::NotifyTimeChange()' Remote Code Execution (Metasploit)

    Open source ↗
  • Metasploitexploit/windows/browser/firefox_smil_uaf✓ verified
    First seen Nov 30, 2016

    Firefox nsSMILTimeContainer::NotifyTimeChange() RCE

    Open source ↗
  • GitHub PoCdangokyo/CVE-2016-9079
    First seen Jul 29, 2018

    A demo exploit of CVE-2016-9079 on Ubuntu x64

    Open source ↗
  • Exploit-DBEDB-42327
    First seen Jul 14, 2017

    Firefox 50.0.1 - ASM.JS JIT-Spray Remote Code Execution

    Open source ↗

Related CVEs(same product + same vendor + same CWE)

Frequently asked(6)

What is CVE-2016-9079?
CVE-2016-9079 is a critical vulnerability published on June 11, 2018. 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.
When was CVE-2016-9079 disclosed?
CVE-2016-9079 was first published on June 11, 2018, with the most recent update on November 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-9079 actively exploited?
Yes. CISA added CVE-2016-9079 to the Known Exploited Vulnerabilities catalog on June 22, 2023, affecting Mozilla Firefox, Firefox ESR, and Thunderbird. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. A fix is available. Apply it.
What is the CVSS score of CVE-2016-9079?
CVE-2016-9079 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0 (CRITICAL).
Which products are affected by CVE-2016-9079?
CVE-2016-9079 affects Mozilla Firefox, Firefox ESR, and Thunderbird. The affected packages EchelonGraph has on record, with version ranges, are listed in the Affected Packages section of this page.
How do I remediate CVE-2016-9079?
A fix for CVE-2016-9079 is available: update to the fixed version the vendor names in its advisory.

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