CVE-2017-7776

Exp

Heap-based Buffer Overflow read in Graphite2 library in Firefox before 54 in graphite2::Silf::getClassGlyph.

Published: 2019-04-15 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-7776 is rated High Exploit Risk (71.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.62%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2017-7776

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2017-7776

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-01-14 0.48% 0.62% +0.14%
2 2025-03-30 1.50% 0.48% -1.03%
3 2025-03-29 — 1.50% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-7776

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.2 [email protected]
5.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 4.9 [email protected]

Weakness enumeration for CVE-2017-7776

OS Trackers for CVE-2017-7776

vendor priority summary link
debian not yet assigned CVE-2017-7776 not yet assigned priority: Debian including 3 source packages (firefox, firefox-esr, graphite2), 11 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 11. https://security-tracker.debian.org/tracker/CVE-2017-7776
gentoo high CVE-2017-7776: 2 GLSA(s) (201710-13, 201802-03), 3 atom(s) (media-gfx/graphite2, www-client/firefox, www-client/firefox-bin); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-7776
redhat low — https://access.redhat.com/security/cve/CVE-2017-7776
suse high CVE-2017-7776 severity important: SUSE including 76 source package names (MozillaFirefox, MozillaFirefox-102.11.0-150200.152.87.1, …), 118 product×package rows across 34 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (34 product lines)): Fixed 84, Known Not Affected 34. https://www.suse.com/security/cve/CVE-2017-7776/
ubuntu medium CVE-2017-7776 medium priority: Ubuntu including 3 source packages (firefox, graphite2, thunderbird), 15 status rows across 5 suites (trusty, upstream, xenial, yakkety, zesty): released 14, ignored 1. https://ubuntu.com/security/CVE-2017-7776

Affected software / configurations for CVE-2017-7776

Vendor Product Version Raw CPE
mozilla firefox < 54.0 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
sil graphite2 < 1.3.10 cpe:2.3:a:sil:graphite2:*:*:*:*:*:*:*:*

References for CVE-2017-7776

cvelogic Threat Intelligence