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CVE-2018-5145
Memory safety bugs were reported in Firefox ESR 52.6. These bugs showed evidence of memory corruption and we presume that with enough…
Critical9.8EPSS 3.0%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
Memory safety bugs were reported in Firefox ESR 52.6. These bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox ESR < 52.7 and Thunderbird < 52.7.
Timeline
ID reserved
By mozilla
- 5 months later
· 5 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 3.0% · top 13% of all CVEs (8 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
- Memory safety bugs fixed in Firefox ESR 52.7
- CWE-119 (opens in a new tab)All about CWE-119 and its CVEs
Affected products
- affected unspecified – < 52.7
- affected unspecified – < 52.7
References (15)
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1261175%2C1348955 (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-4139 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- GLSA-201811-13 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- RHSA-2018:0527 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- USN-3545-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [debian-lts-announce] 20180315 [SECURITY] [DLA 1308-1] firefox-esr security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://www.mozilla.org/security/advisories/mfsa2018-09/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.mozilla.org/security/advisories/mfsa2018-07/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2018:0526 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- [debian-lts-announce] 20180329 [SECURITY] [DLA 1327-1] thunderbird security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- DSA-4155 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- RHSA-2018:0648 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2018:0647 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 1040514 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 103384 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-5145)Record last updated .