01 Record

CVE-2017-7749

A use-after-free vulnerability when using an incorrect URL during the reloading of a docshell. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR <

UnratedPUBLISHEDCNA: mozilla

CNA base scoreUnratedNo CNA CVSS vector

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02 Description

A use-after-free vulnerability when using an incorrect URL during the reloading of a docshell. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR <

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: 2.63% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 84.4% of scored records. A rank, not a probability.
NVD base score: 9.8 (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:H/I:H/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Important. 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 16:12Z2 YR AGO

Reserved

2017-04-12

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-416Use After FreeVariant

Data version

5.1

Document digest

100447a5f3883fdab86bf0df55da265045b7684d885335b74b4a90af4fe8dffd

05 Affected products

VendorProductVersionsPlatforms

MozillaFirefox< 54—

MozillaFirefox ESR< 52.2—

MozillaThunderbird< 52.2—

06 References

bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1355039x_refsource_CONFIRM
www.securityfocus.com99057http://www.securityfocus.com/bid/99057vdb-entryx_refsource_BID
www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-15/x_refsource_CONFIRM
www.debian.orgDSA-3918https://www.debian.org/security/2017/dsa-3918vendor-advisoryx_refsource_DEBIAN
www.securitytracker.com1038689http://www.securitytracker.com/id/1038689vdb-entryx_refsource_SECTRACK
www.debian.orgDSA-3881https://www.debian.org/security/2017/dsa-3881vendor-advisoryx_refsource_DEBIAN
access.redhat.comRHSA-2017:1440https://access.redhat.com/errata/RHSA-2017:1440vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2017:1561https://access.redhat.com/errata/RHSA-2017:1561vendor-advisoryx_refsource_REDHAT
www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-17/x_refsource_CONFIRM
www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-16/x_refsource_CONFIRM

01 Record index

CVE-2017-7749

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2017-7749

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References