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Vulnerability details: VCID-39za-a75a-z7c3
Vulnerability ID VCID-39za-a75a-z7c3
Aliases CVE-2017-7794
Summary On Linux systems, if the content process is compromised, the sandbox broker will allow files to be truncated even though the sandbox explicitly only has read access to the local file system and no write permissions. *Note: This attack only affects the Linux operating system. Other operating systems are not affected.*
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-250 Execution with Unnecessary Privileges
CWE-276 Incorrect Default Permissions
System Score Found at
cvssv3 7.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7794.json
epss 0.00046 https://api.first.org/data/v1/epss?cve=CVE-2017-7794
epss 0.00046 https://api.first.org/data/v1/epss?cve=CVE-2017-7794
epss 0.00046 https://api.first.org/data/v1/epss?cve=CVE-2017-7794
epss 0.00046 https://api.first.org/data/v1/epss?cve=CVE-2017-7794
epss 0.00046 https://api.first.org/data/v1/epss?cve=CVE-2017-7794
epss 0.00046 https://api.first.org/data/v1/epss?cve=CVE-2017-7794
epss 0.00046 https://api.first.org/data/v1/epss?cve=CVE-2017-7794
epss 0.00046 https://api.first.org/data/v1/epss?cve=CVE-2017-7794
epss 0.00046 https://api.first.org/data/v1/epss?cve=CVE-2017-7794
cvssv2 8.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3 4.7 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.6 https://nvd.nist.gov/vuln/detail/CVE-2017-7794
cvssv3 7.8 https://nvd.nist.gov/vuln/detail/CVE-2017-7794
archlinux Critical https://security.archlinux.org/AVG-375
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-18
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7794.json
https://api.first.org/data/v1/epss?cve=CVE-2017-7794
https://bugzilla.mozilla.org/show_bug.cgi?id=1374281
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2017-18/
http://www.securitytracker.com/id/1039124
1479211 https://bugzilla.redhat.com/show_bug.cgi?id=1479211
ASA-201708-3 https://security.archlinux.org/ASA-201708-3
AVG-375 https://security.archlinux.org/AVG-375
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:o:linux:linux_kernel:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
CVE-2017-7794 https://nvd.nist.gov/vuln/detail/CVE-2017-7794
mfsa2017-18 https://www.mozilla.org/en-US/security/advisories/mfsa2017-18
USN-3391-1 https://usn.ubuntu.com/3391-1/
No exploits are available.
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7794.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:N/I:C/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:C/C:N/I:L/A:L 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:L/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-7794
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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-7794
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 0.14221
EPSS Score 0.00046
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:16:44.415639+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2017/mfsa2017-18.yml 38.0.0