CVE-2016-2797

The graphite2::TtfUtil::CmapSubtable12Lookup function in Graphite 2 before 1.3.6, as used in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7, allows remote attackers to cause a denial of service (buffer over-read) or possibly have unspecified other impact via a crafted Graphite smart font, a different vulnerability than CVE-2016-2801.

Published: 2016-03-13 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-2797 is rated Moderate Risk (58.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.56%). Review affected assets and schedule remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2016-2797

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 2026-01-19 0.82% 0.56% -0.26%
2 2025-03-30 2.70% 0.82% -1.87%
3 2025-03-29 — 2.70% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-2797

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/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:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2016-2797

OS Trackers for CVE-2016-2797

vendor priority summary link
debian not yet assigned CVE-2016-2797 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-2016-2797
gentoo normal CVE-2016-2797: 2 GLSA(s) (201605-06, 201701-63), 7 atom(s) (dev-libs/nspr, dev-libs/nss, …); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-2797
redhat critical — https://access.redhat.com/security/cve/CVE-2016-2797
suse high CVE-2016-2797 severity important: SUSE including 147 source package names (MozillaFirefox-102.11.0-150200.152.87.1, MozillaFirefox-115.10.0-150200.152.134.1, …), 385 product×package rows across 71 product lines (Image SLES12-SP5-Azure-BYOS, Image SLES12-SP5-Azure-Basic-On-Demand, … (71 product lines)): Fixed 385. https://www.suse.com/security/cve/CVE-2016-2797/
ubuntu medium CVE-2016-2797 medium priority: Ubuntu including 3 source packages (firefox, graphite2, thunderbird), 21 status rows across 7 suites (precise, trusty, upstream, wily, xenial, yakkety, zesty): released 17, not-affected 3, ignored 1. https://ubuntu.com/security/CVE-2016-2797

Affected software / configurations for CVE-2016-2797

Vendor Product Version Raw CPE
oracle linux 5.0 cpe:2.3:o:oracle:linux:5.0:*:*:*:*:*:*:*
oracle linux 6 cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*
oracle linux 7 cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:*
mozilla firefox <= 44.0.2 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla firefox 38.0 cpe:2.3:a:mozilla:firefox:38.0:*:*:*:*:*:*:*
mozilla firefox 38.0.1 cpe:2.3:a:mozilla:firefox:38.0.1:*:*:*:*:*:*:*
mozilla firefox 38.0.5 cpe:2.3:a:mozilla:firefox:38.0.5:*:*:*:*:*:*:*
mozilla firefox 38.1.0 cpe:2.3:a:mozilla:firefox:38.1.0:*:*:*:*:*:*:*
mozilla firefox 38.1.1 cpe:2.3:a:mozilla:firefox:38.1.1:*:*:*:*:*:*:*
mozilla firefox 38.2.0 cpe:2.3:a:mozilla:firefox:38.2.0:*:*:*:*:*:*:*
mozilla firefox 38.2.1 cpe:2.3:a:mozilla:firefox:38.2.1:*:*:*:*:*:*:*
mozilla firefox 38.3.0 cpe:2.3:a:mozilla:firefox:38.3.0:*:*:*:*:*:*:*
mozilla firefox 38.4.0 cpe:2.3:a:mozilla:firefox:38.4.0:*:*:*:*:*:*:*
mozilla firefox 38.5.0 cpe:2.3:a:mozilla:firefox:38.5.0:*:*:*:*:*:*:*
mozilla firefox 38.5.1 cpe:2.3:a:mozilla:firefox:38.5.1:*:*:*:*:*:*:*
mozilla firefox 38.6.0 cpe:2.3:a:mozilla:firefox:38.6.0:*:*:*:*:*:*:*
mozilla firefox 38.6.1 cpe:2.3:a:mozilla:firefox:38.6.1:*:*:*:*:*:*:*
opensuse leap 42.1 cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
opensuse opensuse 13.1 cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
opensuse opensuse 13.2 cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
suse linux_enterprise 12.0 cpe:2.3:o:suse:linux_enterprise:12.0:*:*:*:*:*:*:*
sil graphite2 <= 1.3.5 cpe:2.3:a:sil:graphite2:*:*:*:*:*:*:*:*

References for CVE-2016-2797

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00027.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00029.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00031.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00050.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00068.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00089.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00091.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00093.html
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00006.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00007.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00008.html Third Party Advisory
http://www.debian.org/security/2016/dsa-3510
http://www.debian.org/security/2016/dsa-3515
http://www.debian.org/security/2016/dsa-3520
http://www.mozilla.org/security/announce/2016/mfsa2016-37.html Vendor Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html Third Party Advisory
http://www.securityfocus.com/bid/84222 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1035215
http://www.ubuntu.com/usn/USN-2917-1
http://www.ubuntu.com/usn/USN-2917-2
http://www.ubuntu.com/usn/USN-2917-3
http://www.ubuntu.com/usn/USN-2927-1
http://www.ubuntu.com/usn/USN-2934-1
https://bugzilla.mozilla.org/show_bug.cgi?id=1243823 Issue Tracking
https://security.gentoo.org/glsa/201605-06 Third Party Advisory
https://security.gentoo.org/glsa/201701-63
cvelogic Threat Intelligence