CVE-2019-11708

CRITICALNVD 10.010.0—
EchelonGraph scoreHIGH confidence

Score elevated to 10.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-05-23), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 10.0 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
10.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 56%CVSS: 10.0Exploit: cisa kev · ssvc active · epss top5pct · epss high · public exploitExposed services: Not assessed

A fix is available — apply it.

Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxed parent process opening web content chosen by a compromised child process. When combined with additional vulnerabilities this could result in executing arbitrary code on the user's computer. This vulnerability affects Firefox ESR < 60.7.2, Firefox < 67.0.4, and Thunderbird < 60.7.2.

CVSS v3
10.0
EG Score
10.0CRITICALhigh confidence
EG Risk
85
EG Risk 85/100CISA 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
Severity100% × 45%
Exploitation100% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Attend at medium and Act at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact.
EPSS PROB
56%
EPSS %ILE
99th
KEV
⚠ Exploited

CISA SSVCTrack at low, Attend at medium and Act at high mission impact.

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

Exploitation active (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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

July 23, 2019

Last Modified

October 27, 2025

Advisory Details (5)

Auto-updated Oct 3, 2026
⚠️ Active exploitation confirmed. Patch available.
generic🔴 Active Exploitation

Security vulnerabilities fixed in Thunderbird 60.7.2 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2019-20/
generic

Security vulnerabilities fixed in Firefox 67.0.4 and Firefox ESR 60.7.2 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2019-19/
generic

Mozilla Firefox: Multiple vulnerabilities (GLSA 201908-12) — Gentoo security

https://security.gentoo.org/glsa/201908-12
generic🔴 Active Exploitation

1559858 - (CVE-2019-11708) Sending `Prompt:Open` from the child allows for a sandbox escape

https://bugzilla.mozilla.org/show_bug.cgi?id=1559858
generic

Packet Storm

http://packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.html

Patch Availability(8)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuxul-ext-lightning (1:60.7.2+build2-0ubuntu0.19.04.1) @ disco2026-10-06ubuntu
ubuntufirefox-testsuite (67.0.4+build1-0ubuntu0.18.04.1) @ bionic2026-10-06ubuntu
redhatfirefox-0:60.7.2-3.el8_02019-07-08redhat
redhatthunderbird-0:60.7.2-2.el6_102019-06-27redhat
redhatthunderbird-0:60.7.2-2.el7_62019-06-27redhat
redhatthunderbird-0:60.7.2-2.el8_02019-06-27redhat
redhatfirefox-0:60.7.2-1.el6_102019-06-25redhat
redhatfirefox-0:60.7.2-1.el7_62019-06-25redhat

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

(14 across 9 ecosystems)
Debian:11(2)
PackageVulnerable rangeFix by version rangeDependents
firefox-esr—
  • every version up to 60.7.2esr-1: fixed in 60.7.2esr-1
—
thunderbird—
  • every version up to 1:60.7.2-1: fixed in 1:60.7.2-1
—
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
firefox-esr—
  • every version up to 60.7.2esr-1: fixed in 60.7.2esr-1
—
thunderbird—
  • every version up to 1:60.7.2-1: fixed in 1:60.7.2-1
—
Debian:13(2)
PackageVulnerable rangeFix by version rangeDependents
firefox-esr—
  • every version up to 60.7.2esr-1: fixed in 60.7.2esr-1
—
thunderbird—
  • every version up to 1:60.7.2-1: fixed in 1:60.7.2-1
—
Debian:14(2)
PackageVulnerable rangeFix by version rangeDependents
firefox-esr—
  • every version up to 60.7.2esr-1: fixed in 60.7.2esr-1
—
thunderbird—
  • every version up to 1:60.7.2-1: fixed in 1:60.7.2-1
—
Debian:9(2)
PackageVulnerable rangeFix by version rangeDependents
firefox-esr45.9.0esr-1 ... 60.7.1esr-1~deb9u1 (107 versions)
  • every version up to 60.7.2esr-1~deb9u1: fixed in 60.7.2esr-1~deb9u1
—
thunderbird1.5-4 ... 1:60.7.2-1~deb8u1 (81 versions)
  • every version up to 1:60.7.2-1~deb9u1: fixed in 1:60.7.2-1~deb9u1
—
Alpine:v3.10(1)
PackageVulnerable rangeFix by version rangeDependents
mozjs60—
  • every version up to 60.7.2-r0: fixed in 60.7.2-r0
—
Alpine:v3.11(1)
PackageVulnerable rangeFix by version rangeDependents
mozjs60—
  • every version up to 60.7.2-r0: fixed in 60.7.2-r0
—
Alpine:v3.12(1)
PackageVulnerable rangeFix by version rangeDependents
mozjs60—
  • every version up to 60.7.2-r0: fixed in 60.7.2-r0
—
Debian:8(1)
PackageVulnerable rangeFix by version rangeDependents
thunderbird1.5-4 ... 1:60.7.1-1~deb9u1 (80 versions)
  • every version up to 1:60.7.2-1~deb8u1: fixed in 1:60.7.2-1~deb8u1
—

Weakness Classification(1)

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

All Vendor Advisories

(8)

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 100× in last 7d / 423× 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 1,732 total refreshes for this CVE.

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

Publicly available exploits

(2 references)

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

  • Exploit-DBEDB-47752
    First seen Dec 7, 2019

    Mozilla FireFox (Windows 10 x64) - Full Chain Client Side Attack

    Open source ↗
  • GitHub PoC0vercl0k/CVE-2019-11708
    First seen Sep 29, 2019

    Full exploit chain (CVE-2019-11708 & CVE-2019-9810) against Firefox on Windows 64-bit.

    Open source ↗

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

Frequently asked(6)

What is CVE-2019-11708?
CVE-2019-11708 is a critical vulnerability published on July 23, 2019. Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxed parent process opening web content chosen by a compromised child process. When combined with additional vulnerabilities this could result in executing…
When was CVE-2019-11708 disclosed?
CVE-2019-11708 was first published on July 23, 2019, with the most recent update on October 27, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-11708 actively exploited?
Yes. CISA added CVE-2019-11708 to the Known Exploited Vulnerabilities catalog on May 23, 2022, affecting Mozilla Firefox 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-2019-11708?
CVE-2019-11708 has a CVSS v3 base score of 10.0 (NVD).
Which products are affected by CVE-2019-11708?
CVE-2019-11708 affects Mozilla Firefox 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-2019-11708?
A fix for CVE-2019-11708 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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