01 Record

CVE-2017-5396

A use-after-free vulnerability in the Media Decoder when working with media files when some events are fired after the media elements are freed from memory. This vulnerability affects Thunderbird <

UnratedPUBLISHEDCNA: mozilla

CNA base scoreUnratedNo CNA CVSS vector

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02 Description

A use-after-free vulnerability in the Media Decoder when working with media files when some events are fired after the media elements are freed from memory. This vulnerability affects Thunderbird <

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: 4.10% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 90.0% 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: 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 14:55Z2 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-416Use After FreeVariant

Data version

5.1

Document digest

c4ea2974fdb145be2ca8601cd2cebbedf24c33e8a04241bb0093a5283ee488b6

05 Affected products

VendorProductVersionsPlatforms

MozillaThunderbird< 45.7—

MozillaFirefox ESR< 45.7—

MozillaFirefox< 51—

06 References

www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-03/x_refsource_CONFIRM
www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-02/x_refsource_CONFIRM
security.gentoo.orgGLSA-201702-22https://security.gentoo.org/glsa/201702-22vendor-advisoryx_refsource_GENTOO
www.debian.orgDSA-3832https://www.debian.org/security/2017/dsa-3832vendor-advisoryx_refsource_DEBIAN
security.gentoo.orgGLSA-201702-13https://security.gentoo.org/glsa/201702-13vendor-advisoryx_refsource_GENTOO
www.debian.orgDSA-3771https://www.debian.org/security/2017/dsa-3771vendor-advisoryx_refsource_DEBIAN
www.securitytracker.com1037693http://www.securitytracker.com/id/1037693vdb-entryx_refsource_SECTRACK
www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-01/x_refsource_CONFIRM
rhn.redhat.comRHSA-2017:0190http://rhn.redhat.com/errata/RHSA-2017-0190.htmlvendor-advisoryx_refsource_REDHAT
bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1329403x_refsource_CONFIRM
rhn.redhat.comRHSA-2017:0238http://rhn.redhat.com/errata/RHSA-2017-0238.htmlvendor-advisoryx_refsource_REDHAT
www.securityfocus.com95769http://www.securityfocus.com/bid/95769vdb-entryx_refsource_BID

01 Record index

CVE-2017-5396

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2017-5396

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References