CVE-2017-5449: mozilla firefox Improper Input Validation
CVSS: 7.5v3.0HighModified
AliasesUBUNTU-CVE-2017-5449
Published 11-06-2018Last modified 05-08-2024
Vulnerability summary
CVE-2017-5449 is a high (CVSS 7.5) Improper Input Validation vulnerability in mozilla firefox. EPSS estimates a 2.51% chance of exploitation in the next 30 days, higher than 84.5% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.0 (NVD)EPSS score
2.51%
0%100%
Low · -0.05 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 13 · Related 8Timeline
- 11-06-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A possibly exploitable crash triggered during layout and manipulation of bidirectional unicode text in concert with CSS animations. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 2 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
2.51%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
-0.05 pp
From 2.56% on 18-09-2026
18-09-202618-10-2026
EPSS score2.51%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat6 products
- enterprise_linuxEOL6.0 | 7.0
- enterprise_linux_desktop6.0 | 7.0
- enterprise_linux_server6.0 | 7.0
- enterprise_linux_server_aus7.3 | 7.4
- enterprise_linux_server_eus7.3 | 7.4 | 7.5
Mozilla3 products
- firefox≥ unspecified, < 53 | < 52.1.0 | < 53.0
- firefox_esr≥ unspecified, < 52.1
- thunderbird≥ unspecified, < 52.1 | < 52.1.0
Ubuntu2 products
- firefox< 53.0+build6-0ubuntu0.14.04.1 | < 53.0+build6-0ubuntu0.16.04.1
- thunderbird< 1:52.1.1+build1-0ubuntu0.14.04.1 | < 1:52.1.1+build1-0ubuntu0.16.04.1
3 vendors · 11 products