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: 87%CVSS: 7.5Exploit: cisa kev · ssvc active · Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

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
9.0(high)
EG Risk
96(Attend)
EG Risk 96/100SSVC: Attend

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%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
87%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

June 11, 2018

Last Modified

November 4, 2025

Advisory Details (9)

Auto-updated Jun 5, 2026
🔬 Proof of concept available. No patch confirmed yet.
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 / EcosystemFixed in / PatchReleasedSource
ubuntuthunderbird (1:45.5.1+build1-0ubuntu0.16.10.1) @ yakkety2026-08-26ubuntu
ubuntufirefox (50.0.2+build1-0ubuntu0.16.10.1) @ yakkety2026-08-26ubuntu
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 rangeFixed inDependents
firefox-esr45.0.1esr-1 ... 45.5.0esr-1~deb8u1 (21 versions)45.5.1esr-1~deb7u1—
icedove10.0.12-1 ... 44.0~b1-1 (121 versions)1:45.5.1-1~deb7u1—
Debian:8(2)
PackageVulnerable rangeFixed inDependents
firefox-esr45.0.1esr-1 ... 45.5.1esr-1~deb7u1 (22 versions)45.5.1esr-1~deb8u1—
icedove1:45.0~b4-1 ... 44.0~b1-1 (68 versions)1:45.5.1-1~deb8u1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
firefox-esr—45.5.1esr-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
firefox-esr—45.5.1esr-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
firefox-esr—45.5.1esr-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
firefox-esr—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 97× in last 7d / 420× 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 1,198 total refreshes for this CVE.

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

  • 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 ↗
  • 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 ↗

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 in the National Vulnerability Database 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 patching attention.
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.
Which products are affected by CVE-2016-9079?
CVE-2016-9079 affects Mozilla Firefox, Firefox ESR, and Thunderbird. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2016-9079?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-9079, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2016-9079

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