01 Record

CVE-2017-5449

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,

UnratedPUBLISHEDCNA: mozilla

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 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,

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 2.56% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 84.0% of scored records. A rank, not a probability.
NVD base score: 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2018-06-11 21:00Z8 YR AGO

Last updated

2024-08-05 15:04Z2 YR AGO

Reserved

2017-01-13

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

e2f7cd46aebba4cfb3484791ae15bbb9ce6eedff9ad46c38a11109ac47e1b658

05 Affected products

VendorProductVersionsPlatforms

MozillaThunderbird< 52.1—

MozillaFirefox ESR< 52.1—

MozillaFirefox< 53—

06 References

access.redhat.comRHSA-2017:1106https://access.redhat.com/errata/RHSA-2017:1106vendor-advisoryx_refsource_REDHAT
bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1340127x_refsource_CONFIRM
www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-12/x_refsource_CONFIRM
www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-10/x_refsource_CONFIRM
www.securityfocus.com97940http://www.securityfocus.com/bid/97940vdb-entryx_refsource_BID
www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-13/x_refsource_CONFIRM
www.securitytracker.com1038320http://www.securitytracker.com/id/1038320vdb-entryx_refsource_SECTRACK
access.redhat.comRHSA-2017:1104https://access.redhat.com/errata/RHSA-2017:1104vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2017:1201https://access.redhat.com/errata/RHSA-2017:1201vendor-advisoryx_refsource_REDHAT

01 Record index

CVE-2017-5449

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2017-5449

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References