CVE-2017-5375

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Exploit-DB (verified), epss top5pct, public exploit)
CISA-KEV: Not listedEPSS PROB: 34%CVSS: 9.8Exploit: Exploit-DB (verified) · epss top5pct · public exploitExposed: 0

A fix is available — apply it.

JIT code allocation can allow for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Track*)
EG Risk 75/100SSVC: Track*

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
Severity98% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
34%
EPSS %ILE
98%
KEV
Not listed

Published

June 11, 2018

Last Modified

November 25, 2025

Advisory Details (10)

Auto-updated Sep 3, 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

[SECURITY] [DSA 3832-1] icedove security update

https://www.debian.org/security/2017/dsa-3832
generic

[SECURITY] [DSA 3771-1] firefox-esr security update

https://www.debian.org/security/2017/dsa-3771
generic

Mozilla Firefox: Multiple vulnerabilities (GLSA 201702-22) — Gentoo security

https://security.gentoo.org/glsa/201702-22
generic

Mozilla Thunderbird: Multiple vulnerabilities (GLSA 201702-13) — Gentoo security

https://security.gentoo.org/glsa/201702-13
generic

1325200 - (CVE-2017-5375) lack of executable-code quota allows full bypass of ASLR and DEP

https://bugzilla.mozilla.org/show_bug.cgi?id=1325200
generic
http://www.securitytracker.com/id/1037693
generic

CVE-2017-5375 - PSIRT.COM

http://www.securityfocus.com/bid/95757
generic
http://rhn.redhat.com/errata/RHSA-2017-0238.html
generic
http://rhn.redhat.com/errata/RHSA-2017-0190.html

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntufirefox (51.0.1+build2-0ubuntu0.16.10.1) @ yakkety2026-05-28ubuntu
ubuntuxul-ext-lightning (1:45.7.0+build1-0ubuntu0.16.04.1) @ xenial2026-05-28ubuntu
redhatthunderbird-0:45.7.0-1.el7_32017-02-02redhat
redhatfirefox-0:45.7.0-2.el7_32017-01-25redhat

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

(8 across 6 ecosystems)
Debian:7(2)
PackageVulnerable rangeFixed inDependents
firefox-esr45.0.1esr-1 ... 45.6.0esr-1~deb8u1 (27 versions)45.7.0esr-1~deb7u1—
icedove10.0.12-1 ... 44.0~b1-1 (133 versions)1:45.8.0-3~deb7u1—
Debian:8(2)
PackageVulnerable rangeFixed inDependents
firefox-esr45.0.1esr-1 ... 45.7.0esr-1~deb7u1 (28 versions)45.7.0esr-1~deb8u1—
icedove1:45.0~b4-1 ... 44.0~b1-1 (80 versions)1:45.8.0-3~deb8u1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
firefox-esr—45.7.0esr-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
firefox-esr—45.7.0esr-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
firefox-esr—45.7.0esr-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
firefox-esr—45.7.0esr-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 5× in last 7d / 20× 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 105 total refreshes for this CVE.

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

Publicly available exploits

(3 references)

Working exploit code is in the public domain (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-44294✓ verified
    First seen Mar 16, 2018

    Firefox 44.0.2 - ASM.JS JIT-Spray Remote Code Execution

    Open source ↗
  • Exploit-DBEDB-44293✓ verified
    First seen Mar 16, 2018

    Firefox 46.0.1 - ASM.JS JIT-Spray Remote Code Execution

    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 vendor + same CWE)

Frequently asked(5)

What is CVE-2017-5375?
CVE-2017-5375 is a critical vulnerability published on June 11, 2018. JIT code allocation can allow for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.
When was CVE-2017-5375 disclosed?
CVE-2017-5375 was first published in the National Vulnerability Database on June 11, 2018, with the most recent update on November 25, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-5375 actively exploited?
CVE-2017-5375 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 34% probability of exploitation in the next 30 days, which ranks it in the top 1.7% of all scored CVEs.
What is the CVSS score of CVE-2017-5375?
CVE-2017-5375 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-5375?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-5375, 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-2017-5375

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