CRITICAL
A use-after-free vulnerability exists in DOMProxyHandler::EnsureExpandoObject in Pale Moon before 27.9.3
Published Jun 13, 2018
9.8
CRITICALCVSS 3.0
EPSS 9.07%
Description
A use-after-free vulnerability exists in DOMProxyHandler::EnsureExpandoObject in Pale Moon before 27.9.3.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
9.8 CRITICAL NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
9.07% 0.09068
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.09068
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (28 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 9.07% (0.09068) | 95.15th | v5 (v2026.06.15) |
| Sep 22, 2026 | 9.07% (0.09068) | 95.06th | v5 (v2026.06.15) |
| Sep 21, 2026 | 6.69% (0.06686) | 93.69th | v5 (v2026.06.15) |
| Sep 6, 2026 | 9.07% (0.09068) | 94.94th | v5 (v2026.06.15) |
| Sep 5, 2026 | 6.69% (0.06686) | 93.55th | v5 (v2026.06.15) |
| Aug 30, 2026 | 9.07% (0.09068) | 94.91th | v5 (v2026.06.15) |
| Aug 28, 2026 | 6.69% (0.06686) | 93.51th | v5 (v2026.06.15) |
| Aug 24, 2026 | 9.07% (0.09068) | 94.88th | v5 (v2026.06.15) |
| Aug 23, 2026 | 6.69% (0.06686) | 93.48th | v5 (v2026.06.15) |
| Jun 15, 2026 | 9.18% (0.09182) | 94.66th | v5 (v2026.06.15) |
| Nov 21, 2025 | 11.83% (0.11834) | 93.44th | v4 (v2025.03.14) |
| Nov 18, 2025 | 13.75% (0.13747) | 93.63th | v4 (v2025.03.14) |
| Mar 30, 2025 | 11.83% (0.11834) | 93.08th | v4 (v2025.03.14) |
| Mar 29, 2025 | 21.79% (0.21790) | 93.08th | v4 (v2025.03.14) |
| Mar 17, 2025 | 11.83% (0.11834) | 93.16th | v4 (v2025.03.14) |
| Dec 12, 2024 | 5.84% (0.05837) | 93.67th | v3 (v2023.03.01) |
| Nov 4, 2023 | 5.84% (0.05837) | 92.57th | v3 (v2023.03.01) |
| Jul 31, 2023 | 6.09% (0.06091) | 92.53th | v3 (v2023.03.01) |
| Jun 25, 2023 | 7.41% (0.07408) | 93.14th | v3 (v2023.03.01) |
| May 5, 2023 | 7.73% (0.07727) | 93.19th | v3 (v2023.03.01) |
| Mar 7, 2023 | 9.89% (0.09887) | 93.86th | v3 (v2023.03.01) |
| Mar 6, 2023 | 8.38% (0.08382) | 93.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 8.38% (0.08382) | 93.35th | v2 (v2022.01.01) |
| Feb 4, 2022 | 8.38% (0.08382) | 82.62th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v1 |
| Jan 6, 2022 | 2.74% (0.02742) | 62.72th | v1 |
| Sep 1, 2021 | 2.74% (0.02742) | 80.38th | v1 |
| Apr 14, 2021 | 2.74% (0.02742) | 0.00th | v1 |
Weaknesses (1)
References (2)
- https://www.exploit-db.com/exploits/44900/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
- https://www.palemoon.org/releasenotes.shtml x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.exploit-db.com/exploits/44900/ | exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry | |
| https://www.palemoon.org/releasenotes.shtml | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jun 13, 2018
Updated Aug 5, 2024
Reserved Jun 13, 2018
Link CVE-2018-12292
CISA Vulnrichment
Updated n/a