CVE-2017-7766
An attack using manipulation of "updater.ini" contents, used by the Mozilla Windows Updater, and...
An attack using manipulation of "updater.ini" contents, used by the Mozilla Windows Updater, and privilege escalation through the Mozilla Maintenance Service to allow for arbitrary file execution and deletion by the Maintenance Service, which has privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR < 52.2 and Firefox < 54.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
7.8
An attack using manipulation of "updater.ini" contents, used by the Mozilla Windows Updater, and privilege escalation through the Mozilla Maintenance Service to allow for arbitrary file execution and deletion by the Maintenance Service, which has privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR < 52.2 and Firefox < 54.
- Record
CVE-2017-7766- CVSS 3.0
- 7.8 High
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 4.6 Medium
AV:L/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
An attack using manipulation of "updater.ini" contents, used by the Mozilla Windows Updater, and privilege escalation through the Mozilla Maintenance Service to allow for arbitrary file execution and deletion by the Maintenance Service, which has privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR < 52.2 and Firefox < 54.
- Record
CVE-2017-7766- Updated
- 2026-11-02
EUVDEUVD-2017-16741 No score
An attack using manipulation of "updater.ini" contents, used by the Mozilla Windows Updater, and privilege escalation through the Mozilla Maintenance Service to allow for arbitrary file execution and deletion by the Maintenance Service, which has privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR < 52.2 and Firefox < 54.
- Record
EUVD-2017-16741- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w9c7-gp5q-hh44
7.8
An attack using manipulation of "updater.ini" contents, used by the Mozilla Windows Updater, and...
An attack using manipulation of "updater.ini" contents, used by the Mozilla Windows Updater, and privilege escalation through the Mozilla Maintenance Service to allow for arbitrary file execution and deletion by the Maintenance Service, which has privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR < 52.2 and Firefox < 54.
- Record
GHSA-w9c7-gp5q-hh44- CVSS 3.0
- 7.8 High
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVMGASA-2018-0018 No score
Updated iceape packages fix security vulnerabilities
Updated iceape packages include security fixes from upstream Seamonkey and Firefox:
Multiple flaws were found in the way Iceape 2.48 processes various types of web content, where loading a web page containing malicious content could cause Iceape to crash, execute arbitrary code, or disclose sensitive information. (CVE-2016-10196,CVE-2017-5398,CVE-2017-5399, CVE-2017-5400,CVE-2017-5401,CVE-2017-5402,CVE-2017-5403,CVE-2017-5404, CVE-2017-5405,CVE-2017-5406,CVE-2017-5407,CVE-2017-5409,CVE-2017-5410, CVE-2017-5411,CVE-2017-5408,CVE-2017-5412,CVE-2017-5413,CVE-2017-5414, CVE-2017-5415,CVE-2017-5416,CVE-2017-5417,CVE-2017-5425,CVE-2017-5426, CVE-2017-5427,CVE-2017-5418,CVE-2017-5419,CVE-2017-5420,CVE-2017-5421, CVE-2017-5422,CVE-2017-5429,CVE-2017-5430,CVE-2017-5432,CVE-2017-5433, CVE-2017-5434,CVE-2017-5435,CVE-2017-5436,CVE-2017-5438,CVE-2017-5439, CVE-2017-5440,CVE-2017-5441,CVE-2017-5442,CVE-2017-5443,CVE-2017-5444, CVE-2017-5445,CVE-2017-5446,CVE-2017-5447,CVE-2017-5448,CVE-2017-5449, CVE-2017-5451,CVE-2017-5454,CVE-2017-5455,CVE-2017-5456,CVE-2017-5459, CVE-2017-5460,CVE-2017-5461,CVE-2017-5462,CVE-2017-5464,CVE-2017-5465, CVE-2017-5466,CVE-2017-5467,CVE-2017-5469,CVE-2017-5470,CVE-2017-5472, CVE-2017-7749,CVE-2017-7750,CVE-2017-7751,CVE-2017-7752,CVE-2017-7753, CVE-2017-7754,CVE-2017-7755,CVE-2017-7756,CVE-2017-7757,CVE-2017-7758, CVE-2017-7760,CVE-2017-7761,CVE-2017-7763,CVE-2017-7764,CVE-2017-7765, CVE-2017-7766,CVE-2017-7767,CVE-2017-7768,CVE-2017-7778,CVE-2017-7779, CVE-2017-7782,CVE-2017-7784,CVE-2017-7785,CVE-2017-7786,CVE-2017-7787, CVE-2017-7791,CVE-2017-7792,CVE-2017-7793,CVE-2017-7798,CVE-2017-7800, CVE-2017-7801,CVE-2017-7802,CVE-2017-7803,CVE-2017-7804,CVE-2017-7805, CVE-2017-7807,CVE-2017-7809,CVE-2017-7810,CVE-2017-7814,CVE-2017-7818, CVE-2017-7819,CVE-2017-7823,CVE-2017-7824,CVE-2017-7825,CVE-2017-7826, CVE-2017-7828,CVE-2017-7830,CVE-2017-7843,CVE-2017-7845)
- Record
MGASA-2018-0018- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-7766 is a high vulnerability (CVSS 7.8) in Mozilla Firefox, published January 2, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 31st percentile. No source names a fixed version.
References
securityfocus.com/bid/99057
mozilla.org/security/advisories/mfsa2017-15
securitytracker.com/id/1038689
bugzilla.mozilla.org/show_bug.cgi?id=1342742
mozilla.org/security/advisories/mfsa2017-16
nvd.nist.gov/vuln/detail/CVE-2017-7766
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github.com/advisories/GHSA-w9c7-gp5q-hh44
advisories.mageia.org/MGASA-2018-0018.html
bugs.mageia.org/show_bug.cgi?id=22283
mozilla.org/en-US/security/advisories/mfsa2017-05
mozilla.org/en-US/security/advisories/mfsa2017-12
mozilla.org/en-US/security/advisories/mfsa2017-16
mozilla.org/en-US/security/advisories/mfsa2017-19
mozilla.org/en-US/security/advisories/mfsa2017-22
mozilla.org/en-US/security/advisories/mfsa2017-25
mozilla.org/en-US/security/advisories/mfsa2017-28