CVE-2016-5280: mozilla firefox Use After Free
CVSS: 9.8v3.0CriticalModified
AliasesUBUNTU-CVE-2016-5280DEBIAN-CVE-2016-5280
Published 22-09-2016Last modified 06-08-2024
Vulnerability summary
CVE-2016-5280 is a critical (CVSS 9.8) Use After Free vulnerability in mozilla firefox. EPSS estimates a 5.04% chance of exploitation in the next 30 days, higher than 92.1% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.0 (NVD)EPSS score
5.04%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 12 · Related 7Timeline
- 22-09-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
Use-after-free vulnerability in the mozilla::nsTextNodeDirectionalityMap::RemoveElementFromMap function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 allows remote attackers to execute arbitrary code via bidirectional text.
CVSS metrics
4 scores · 3 sources · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
5.04%
Chance of exploitation in the next 30 days
Percentile
92%
Versus all other CVEs
30-day change
0.00 pp
From 5.04% on 19-09-2026
19-09-202619-10-2026
EPSS score5.04%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu2 products
- firefox< 49.0+build4-0ubuntu0.14.04.1 | < 49.0+build4-0ubuntu0.16.04.1
- thunderbird< 1:45.4.0+build1-0ubuntu0.14.04.1 | < 1:45.4.0+build1-0ubuntu0.16.04.1
Debian1 product
- firefox-esr< 45.4.0esr-1
Mozilla1 product
- firefox≤ 48.0.2 | 45.0 | 45.0.1 | 45.0.2 | 45.1.1 | 45.2.0 | 45.3.0
3 vendors · 4 products
References
16 links- bugzilla.mozilla.org/show_bug.cgi?id=1289970X Refsource CONFIRMIssue TrackingThird Party AdvisoryVDB Entry
- www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.htmlX Refsource CONFIRM
- www.mozilla.org/security/announce/2016/mfsa2016-85.htmlX Refsource CONFIRMRelease NotesVendor Advisory
- www.mozilla.org/security/advisories/mfsa2016-86/X Refsource CONFIRM
- www.mozilla.org/security/advisories/mfsa2016-88/X Refsource CONFIRM