CVE-2017-7778

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: 5%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

A number of security vulnerabilities in the Graphite 2 library including out-of-bounds reads, buffer overflow reads and writes, and the use of uninitialized memory. These issues were addressed in Graphite 2 version 1.3.10. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
51(Track)
EG Risk 51/100SSVC: 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%
Exploitation5% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
5%
EPSS %ILE
92%
KEV
Not listed

Published

June 11, 2018

Last Modified

November 25, 2025

Advisory Details (10)

Auto-updated Sep 3, 2026
Patch available. Sources: redhat.
generic

1355174 - (CVE-2017-7774) Graphite2: out of bounds read [@ graphite2::Silf::readGraphite]

https://bugzilla.mozilla.org/show_bug.cgi?id=1355174
generic

1352747 - (CVE-2017-7773) Graphite2 heap-buffer-overflow write [@ lz4::decompress] src/Decompressor.cpp:90

https://bugzilla.mozilla.org/show_bug.cgi?id=1352747
generic

1352745 - (CVE-2017-7772) Graphite2 heap-buffer-overflow write [@ lz4::decompress]

https://bugzilla.mozilla.org/show_bug.cgi?id=1352745
generic

1350047 - (CVE-2017-7771) Graphite2: out of bounds read [@ graphite2::Pass::readPass]

https://bugzilla.mozilla.org/show_bug.cgi?id=1350047
generic

1349310 - (CVE-2017-7778) Graphite2 lz4::decompress out of bounds write

https://bugzilla.mozilla.org/show_bug.cgi?id=1349310
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2017:1793
redhat Patch Available

Affected: Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2017:1561
redhat Patch Available

Affected: Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2017:1440
generic
http://www.securitytracker.com/id/1038689
generic

CVE-2017-7749 - PSIRT.COM

http://www.securityfocus.com/bid/99057

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntufirefox (54.0+build3-0ubuntu0.17.04.1) @ zesty2026-05-28ubuntu
ubuntulibgraphite2-doc (1.3.10-0ubuntu0.14.04.1) @ trusty2026-05-28ubuntu
ubuntuxul-ext-lightning (1:52.2.1+build1-0ubuntu0.16.04.1) @ xenial2026-05-28ubuntu
redhatgraphite2-0:1.3.10-1.el7_32017-07-20redhat
redhatthunderbird-0:52.2.0-1.el7_32017-06-21redhat
redhatfirefox-0:52.2.0-1.el7_32017-06-14redhat

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

(16 across 7 ecosystems)
Debian:7(3)
PackageVulnerable rangeFixed inDependents
firefox-esr45.0.1esr-1 ... 52.1.0esr-1 (43 versions)52.2.0esr-1~deb7u1—
graphite21.1.3-1 ... 1.3.9-4 (40 versions)1.3.10-1~deb7u1—
icedove10.0.12-1 ... 44.0~b1-1 (140 versions)1:52.2.1-1~deb7u1—
Debian:8(3)
PackageVulnerable rangeFixed inDependents
firefox-esr45.0.1esr-1 ... 52.2.0esr-1~deb7u1 (44 versions)52.2.0esr-1~deb8u1—
graphite21.2.4-3 ... 1.3.9-4 (24 versions)1.3.10-1~deb8u1—
icedove1:45.0~b4-1 ... 44.0~b1-1 (90 versions)1:52.2.1-4~deb8u1—
Debian:11(2)
PackageVulnerable rangeFixed inDependents
firefox-esr—52.2.0esr-1—
graphite2—1.3.10-1—
Debian:12(2)
PackageVulnerable rangeFixed inDependents
firefox-esr—52.2.0esr-1—
graphite2—1.3.10-1—
Debian:13(2)
PackageVulnerable rangeFixed inDependents
firefox-esr—52.2.0esr-1—
graphite2—1.3.10-1—
Debian:14(2)
PackageVulnerable rangeFixed inDependents
firefox-esr—52.2.0esr-1—
graphite2—1.3.10-1—
Debian:9(2)
PackageVulnerable rangeFixed inDependents
firefox-esr45.9.0esr-1 ... 52.2.0esr-1~deb8u1 (7 versions)52.2.0esr-1~deb9u1—
icedove1:45.8.0-3 ... 1:52.2.1-4~deb8u1 (10 versions)1:52.2.1-4~deb9u1—

Weakness Classification(3)

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

All Vendor Advisories

(6)

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 6× in last 7d / 22× 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 137 total refreshes for this CVE.

  1. 2026-09-07 15:56 UTCEPSS rescore
  2. 2026-09-05 15:24 UTCEPSS rescore
  3. 2026-09-04 13:56 UTCEPSS rescore
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  14. 2026-08-22 15:07 UTCOSV refresh
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  25. 2026-08-06 19:05 UTCOSV refresh
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  1. 2026-08-06 13:42 UTCEPSS rescore
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  7. 2026-07-30 16:24 UTCEPSS rescore
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  9. 2026-07-28 15:32 UTCEPSS rescore
  10. 2026-07-26 14:51 UTCEPSS rescore
  11. 2026-07-26 14:51 UTCEPSS rescore
  12. 2026-07-23 14:15 UTCEPSS rescore
  13. 2026-07-23 01:30 UTCEG score recompute
  14. 2026-07-22 22:10 UTCEG score recompute
  15. 2026-07-22 14:04 UTCEPSS rescore
  16. 2026-07-21 15:21 UTCEPSS rescore
  17. 2026-07-21 11:17 UTCOSV refresh
  18. 2026-07-20 17:04 UTCEPSS rescore
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  20. 2026-07-19 14:28 UTCEPSS rescore
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  22. 2026-07-19 02:26 UTCEPSS rescore
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  24. 2026-07-18 10:01 UTCEPSS rescore
  25. 2026-07-16 16:59 UTCEPSS rescore
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  27. 2026-07-15 16:55 UTCEPSS rescore
  28. 2026-07-15 16:54 UTCEPSS rescore
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  31. 2026-07-13 22:26 UTCEPSS rescore
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  36. 2026-07-08 15:11 UTCEPSS rescore
  37. 2026-07-07 13:42 UTCEPSS rescore
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  40. 2026-07-06 02:20 UTCEPSS rescore
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  42. 2026-07-05 02:27 UTCEPSS rescore
  43. 2026-07-04 06:56 UTCOSV refresh
  44. 2026-07-04 06:28 UTCEPSS rescore
  45. 2026-07-04 06:28 UTCEPSS rescore
  46. 2026-07-02 16:54 UTCEPSS rescore
  47. 2026-07-01 15:03 UTCEPSS rescore
  48. 2026-06-30 23:19 UTCEPSS rescore
  49. 2026-06-30 23:19 UTCEPSS rescore
  50. 2026-06-29 14:03 UTCEPSS rescore
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  70. 2026-06-16 17:50 UTCEPSS rescore
  71. 2026-06-15 18:13 UTCOSV refresh
  72. 2026-06-15 17:45 UTCEPSS rescore
  73. 2026-06-14 23:14 UTCEPSS rescore
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  75. 2026-06-13 22:58 UTCEPSS rescore

Frequently asked(5)

What is CVE-2017-7778?
CVE-2017-7778 is a critical vulnerability published on June 11, 2018. A number of security vulnerabilities in the Graphite 2 library including out-of-bounds reads, buffer overflow reads and writes, and the use of uninitialized memory. These issues were addressed in Graphite 2 version 1.3.10. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird…
When was CVE-2017-7778 disclosed?
CVE-2017-7778 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-2017-7778 actively exploited?
CVE-2017-7778 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5% probability of exploitation in the next 30 days, which ranks it in the top 8.1% of all scored CVEs.
What is the CVSS score of CVE-2017-7778?
CVE-2017-7778 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-7778?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-7778, 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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