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Vulnerability details: VCID-fv71-g376-5ua4
Vulnerability ID VCID-fv71-g376-5ua4
Aliases CVE-2017-7753
Summary An out-of-bounds read occurs when applying style rules to pseudo-elements, such as ::first-line, using cached style data.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-125 Out-of-bounds Read
System Score Found at
cvssv3 9.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7753.json
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2017-7753
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2017-7753
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2017-7753
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2017-7753
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2017-7753
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2017-7753
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2017-7753
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2017-7753
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2017-7753
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2017-7753
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2017-7753
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2017-7753
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2017-7753
cvssv2 7.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3 6.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 6.4 https://nvd.nist.gov/vuln/detail/CVE-2017-7753
cvssv3 9.1 https://nvd.nist.gov/vuln/detail/CVE-2017-7753
archlinux Critical https://security.archlinux.org/AVG-375
archlinux Critical https://security.archlinux.org/AVG-385
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-18
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-19
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-20
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2017:2456
https://access.redhat.com/errata/RHSA-2017:2534
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7753.json
https://api.first.org/data/v1/epss?cve=CVE-2017-7753
https://bugzilla.mozilla.org/show_bug.cgi?id=1353312
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7753
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7779
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7784
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7785
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7786
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7787
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7791
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7792
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7798
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7800
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7801
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7802
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7803
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7807
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7809
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://security.gentoo.org/glsa/201803-14
https://www.debian.org/security/2017/dsa-3928
https://www.debian.org/security/2017/dsa-3968
https://www.mozilla.org/security/advisories/mfsa2017-18/
https://www.mozilla.org/security/advisories/mfsa2017-19/
https://www.mozilla.org/security/advisories/mfsa2017-20/
http://www.securityfocus.com/bid/100315
http://www.securitytracker.com/id/1039124
1479188 https://bugzilla.redhat.com/show_bug.cgi?id=1479188
872834 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=872834
ASA-201708-18 https://security.archlinux.org/ASA-201708-18
ASA-201708-3 https://security.archlinux.org/ASA-201708-3
AVG-375 https://security.archlinux.org/AVG-375
AVG-385 https://security.archlinux.org/AVG-385
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
CVE-2017-7753 https://nvd.nist.gov/vuln/detail/CVE-2017-7753
mfsa2017-18 https://www.mozilla.org/en-US/security/advisories/mfsa2017-18
mfsa2017-19 https://www.mozilla.org/en-US/security/advisories/mfsa2017-19
mfsa2017-20 https://www.mozilla.org/en-US/security/advisories/mfsa2017-20
USN-3391-1 https://usn.ubuntu.com/3391-1/
USN-3416-1 https://usn.ubuntu.com/3416-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7753.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:C Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-7753
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-7753
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.85081
EPSS Score 0.02616
Published At Aug. 7, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:17.368712+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2017/mfsa2017-19.yml 37.0.0