CVE-2018-5147

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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The libtremor library has the same flaw as CVE-2018-5146. This library is used by Firefox in place of libvorbis on Android and ARM platforms. This vulnerability affects Firefox ESR < 52.7.2 and Firefox < 59.0.1.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
83%
KEV
Not listed

Published

June 11, 2018

Last Modified

November 25, 2025

Advisory Details (8)

Auto-updated Sep 3, 2026
Patch available.
generic
http://www.securitytracker.com/id/1040544
generic

CVE-2018-5146 - PSIRT.COM

http://www.securityfocus.com/bid/103432
generic

Out of bounds memory write while processing Vorbis audio data — Mozilla

https://www.mozilla.org/security/advisories/mfsa2018-08/
generic

[SECURITY] [DSA 4143-1] firefox-esr security update

https://www.debian.org/security/2018/dsa-4143
generic

[SECURITY] [DSA 4141-1] libvorbisidec security update

https://www.debian.org/security/2018/dsa-4141
generic Patch Available

[SECURITY] [DLA 1319-1] firefox-esr security update

https://lists.debian.org/debian-lts-announce/2018/03/msg00022.html
generic Patch Available

[SECURITY] [DLA 1312-1] libvorbisidec security update

https://lists.debian.org/debian-lts-announce/2018/03/msg00016.html
generic

1446365 - (CVE-2018-5147) Out of bounds write in libtremor

https://bugzilla.mozilla.org/show_bug.cgi?id=1446365

Affected Packages

(14 across 7 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
firefox-esr—52.7.2esr-1—
libvorbisidec—1.2.1+git20180316-1—
Debian:12(2)
PackageVulnerable rangeFixed inDependents
firefox-esr—52.7.2esr-1—
libvorbisidec—1.2.1+git20180316-1—
Debian:13(2)
PackageVulnerable rangeFixed inDependents
firefox-esr—52.7.2esr-1—
libvorbisidec—1.2.1+git20180316-1—
Debian:14(2)
PackageVulnerable rangeFixed inDependents
firefox-esr—52.7.2esr-1—
libvorbisidec—1.2.1+git20180316-1—
Debian:7(2)
PackageVulnerable rangeFixed inDependents
firefox-esr45.0.1esr-1 ... 52.7.1esr-1~deb9u1 (81 versions)52.7.2esr-1~deb7u1—
libvorbisidec1.0.2+svn18153-0.21.0.2+svn18153-0.2+deb7u1—
Debian:8(2)
PackageVulnerable rangeFixed inDependents
firefox-esr45.0.1esr-1 ... 52.7.2esr-1~deb7u1 (82 versions)52.7.2esr-1~deb8u1—
libvorbisidec1.0.2+svn18153-0.2, 1.0.2+svn18153-1~deb8u11.0.2+svn18153-1~deb8u2—
Debian:9(2)
PackageVulnerable rangeFixed inDependents
firefox-esr45.9.0esr-1 ... 52.7.2esr-1~deb8u1 (45 versions)52.7.2esr-1~deb9u1—
libvorbisidec1.0.2+svn18153-11.0.2+svn18153-1+deb9u1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 23× 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 140 total refreshes for this CVE.

  1. 2026-09-06 13:44 UTCEPSS rescore
  2. 2026-09-04 13:56 UTCEPSS rescore
  3. 2026-09-04 05:02 UTCEPSS rescore
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  11. 2026-08-25 13:45 UTCEPSS rescore
  12. 2026-08-24 14:11 UTCEPSS rescore
  13. 2026-08-22 15:07 UTCOSV refresh
  14. 2026-08-21 23:45 UTCEPSS rescore
  15. 2026-08-20 22:51 UTCEPSS rescore
  16. 2026-08-19 17:00 UTCEPSS rescore
  17. 2026-08-18 13:44 UTCEPSS rescore
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  21. 2026-08-15 01:26 UTCEPSS rescore
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  24. 2026-08-08 16:32 UTCEPSS rescore
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  1. 2026-08-06 19:05 UTCOSV refresh
  2. 2026-08-06 13:42 UTCEPSS rescore
  3. 2026-08-04 15:05 UTCEPSS rescore
  4. 2026-08-04 10:33 UTCEPSS rescore
  5. 2026-08-03 10:31 UTCEPSS rescore
  6. 2026-08-02 02:23 UTCEPSS rescore
  7. 2026-08-01 04:12 UTCEPSS rescore
  8. 2026-07-30 16:24 UTCEPSS rescore
  9. 2026-07-30 01:27 UTCEPSS rescore
  10. 2026-07-28 15:32 UTCEPSS rescore
  11. 2026-07-27 14:05 UTCEPSS rescore
  12. 2026-07-26 14:51 UTCEPSS rescore
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  18. 2026-07-23 14:15 UTCEPSS rescore
  19. 2026-07-23 01:36 UTCEG score recompute
  20. 2026-07-22 22:16 UTCEG score recompute
  21. 2026-07-22 14:05 UTCEPSS rescore
  22. 2026-07-21 15:22 UTCEPSS rescore
  23. 2026-07-21 11:17 UTCOSV refresh
  24. 2026-07-20 17:04 UTCEPSS rescore
  25. 2026-07-20 17:04 UTCEPSS rescore
  26. 2026-07-19 14:28 UTCEPSS rescore
  27. 2026-07-19 14:28 UTCEPSS rescore
  28. 2026-07-19 02:26 UTCEPSS rescore
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  30. 2026-07-16 16:59 UTCEPSS rescore
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  36. 2026-07-12 05:43 UTCEPSS rescore
  37. 2026-07-09 19:06 UTCEPSS rescore
  38. 2026-07-08 15:11 UTCEPSS rescore
  39. 2026-07-08 15:11 UTCEPSS rescore
  40. 2026-07-07 13:42 UTCEPSS rescore
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  42. 2026-07-06 16:25 UTCEPSS rescore
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  45. 2026-07-05 02:27 UTCEPSS rescore
  46. 2026-07-04 06:28 UTCEPSS rescore
  47. 2026-07-04 06:28 UTCEPSS rescore
  48. 2026-07-04 06:26 UTCOSV refresh
  49. 2026-07-01 15:03 UTCEPSS rescore
  50. 2026-07-01 15:03 UTCEPSS rescore
  51. 2026-06-30 23:20 UTCEPSS rescore
  52. 2026-06-30 23:20 UTCEPSS rescore
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  54. 2026-06-28 14:04 UTCEPSS rescore
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  63. 2026-06-23 21:30 UTCEPSS rescore
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  65. 2026-06-22 14:23 UTCEPSS rescore
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  67. 2026-06-21 14:54 UTCEPSS rescore
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  69. 2026-06-21 01:57 UTCEPSS rescore
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  71. 2026-06-19 19:23 UTCEPSS rescore
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  73. 2026-06-18 17:50 UTCEPSS rescore
  74. 2026-06-18 17:50 UTCEPSS rescore
  75. 2026-06-17 17:50 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-5147?
CVE-2018-5147 is a critical vulnerability published on June 11, 2018. The libtremor library has the same flaw as CVE-2018-5146. This library is used by Firefox in place of libvorbis on Android and ARM platforms. This vulnerability affects Firefox ESR < 52.7.2 and Firefox < 59.0.1.
When was CVE-2018-5147 disclosed?
CVE-2018-5147 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-2018-5147 actively exploited?
CVE-2018-5147 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 16.8% of all scored CVEs.
What is the CVSS score of CVE-2018-5147?
CVE-2018-5147 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-5147?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-5147, 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

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