Mozilla: Memory safety bugs fixed in Firefox 65 and Firefox ESR 60.5
Published Feb 5, 2019
9.8
CRITICALCVSS 3.0
EPSS 3.37%
Description
Mozilla developers and community members reported memory safety bugs present in Firefox 64 and Firefox ESR 60.4. Some of 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 Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<65
- Version
-
- Version unspecifiedStatusaffectedConstraints<60.5
- Version
-
- Version unspecifiedStatusaffectedConstraints<60.5
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Mozilla | Firefox | n/a |
| ||||||
| Mozilla | Firefox ESR | n/a |
| ||||||
| Mozilla | Thunderbird | n/a |
|
Configuration 1
- < 65.0
- < 60.5
- < 60.5
Configuration 2
- 14.04
- 16.04
- 18.04
- 18.10
Configuration 3
- 8.0
- 9.0
Configuration 4
- 6.0
- 7.0
- 6.0
- 7.0
- 7.6
- 7.6
- 6.0
- 7.0
No data.
Red Hat Enterprise Linux 6
firefox-0:60.5.0-2.el6
Fixed · RHSA-2019:0218
Red Hat Enterprise Linux 6
thunderbird-0:60.5.0-1.el6_10
Fixed · RHSA-2019:0269
Red Hat Enterprise Linux 7
firefox-0:60.5.0-2.el7
Fixed · RHSA-2019:0219
Red Hat Enterprise Linux 7
thunderbird-0:60.5.0-1.el7_6
Fixed · RHSA-2019:0270
Red Hat Enterprise Linux 8
firefox
Not affected
Red Hat Enterprise Linux 8
thunderbird
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | firefox-0:60.5.0-2.el6 | Fixed | RHSA-2019:0218 |
| Red Hat Enterprise Linux 6 | thunderbird-0:60.5.0-1.el6_10 | Fixed | RHSA-2019:0269 |
| Red Hat Enterprise Linux 7 | firefox-0:60.5.0-2.el7 | Fixed | RHSA-2019:0219 |
| Red Hat Enterprise Linux 7 | thunderbird-0:60.5.0-1.el7_6 | Fixed | RHSA-2019:0270 |
| Red Hat Enterprise Linux 8 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 8 | thunderbird | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (23 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 3.37% (0.03372) | 88.37th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.47% (0.03466) | 87.49th | v5 (v2026.06.15) |
| May 29, 2026 | 5.49% (0.05486) | 90.35th | v4 (v2025.03.14) |
| May 26, 2026 | 8.33% (0.08327) | 92.38th | v4 (v2025.03.14) |
| Dec 28, 2025 | 4.71% (0.04707) | 89.02th | v4 (v2025.03.14) |
| Dec 27, 2025 | 2.58% (0.02578) | 85.20th | v4 (v2025.03.14) |
| Nov 21, 2025 | 4.71% (0.04707) | 88.89th | v4 (v2025.03.14) |
| Nov 18, 2025 | 10.62% (0.10616) | 92.53th | v4 (v2025.03.14) |
| Oct 28, 2025 | 4.73% (0.04733) | 88.90th | v4 (v2025.03.14) |
| Oct 27, 2025 | 2.59% (0.02592) | 85.08th | v4 (v2025.03.14) |
| Oct 1, 2025 | 4.73% (0.04733) | 88.99th | v4 (v2025.03.14) |
| May 25, 2025 | 3.06% (0.03064) | 86.07th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.07% (0.04071) | 87.47th | v4 (v2025.03.14) |
| Mar 29, 2025 | 8.67% (0.08665) | 87.20th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.07% (0.04071) | 87.78th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.62% (0.00622) | 79.57th | v3 (v2023.03.01) |
| Jun 28, 2024 | 1.29% (0.01289) | 85.88th | v3 (v2023.03.01) |
| Jan 30, 2024 | 1.26% (0.01257) | 84.15th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.17% (0.01168) | 82.73th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.02% (0.03022) | 65.00th | v5 (v2026.06.15) |
| Apr 14, 2021 | 3.02% (0.03022) | 0.00th | v1 |
References (22)
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html vendor-advisoryx_refsource_SUSE
- http://www.securityfocus.com/bid/106781 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2019:0218 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0219 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0269 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0270 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-18501 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1670632 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2019/01/msg00025.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00024.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-18501
- https://security.gentoo.org/glsa/201903-04 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://security.gentoo.org/glsa/201904-07 vendor-advisoryx_refsource_GENTOO
- https://usn.ubuntu.com/3874-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3897-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-18501
- https://www.debian.org/security/2019/dsa-4376 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.debian.org/security/2019/dsa-4392 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2019-02/#CVE-2018-18501
- https://www.mozilla.org/security/advisories/mfsa2019-01/ x_refsource_CONFIRMVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-02/ x_refsource_CONFIRMVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-03/ x_refsource_CONFIRMVendor Advisory
Change history (0)
No recorded changes yet.