CRITICAL
MP4NameFirstMatches in mp4util.cpp in MP4v2 2.0.0 mishandles substrings of atom names, leading to use of an inappropriate data type for associated atoms
Published Jul 19, 2018
9.8
CRITICALCVSS 3.0
EPSS 2.60%
Description
MP4NameFirstMatches in mp4util.cpp in MP4v2 2.0.0 mishandles substrings of atom names, leading to use of an inappropriate data type for associated atoms. The resulting type confusion can cause out-of-bounds memory access.
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.
2.60% 0.02596
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02596
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.60% (0.02596) | 84.78th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.60% (0.02596) | 83.25th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.42% (0.00416) | 74.32th | v3 (v2023.03.01) |
| May 3, 2024 | 0.42% (0.00416) | 73.94th | v3 (v2023.03.01) |
| Mar 7, 2024 | 0.58% (0.00576) | 77.50th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.54% (0.00542) | 76.64th | v3 (v2023.03.01) |
| Jul 15, 2023 | 0.54% (0.00542) | 74.28th | v3 (v2023.03.01) |
| Jul 13, 2023 | 0.57% (0.00573) | 74.99th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.55% (0.00554) | 74.48th | v3 (v2023.03.01) |
| May 8, 2023 | 0.66% (0.00662) | 76.59th | v3 (v2023.03.01) |
| Apr 12, 2023 | 0.47% (0.00474) | 72.03th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.33% (0.00332) | 66.49th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.04% (0.01040) | 28.32th | v1 |
| Jan 6, 2022 | 1.04% (0.01040) | 27.69th | v1 |
| Sep 1, 2021 | 1.04% (0.01040) | 64.49th | v1 |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
Weaknesses (1)
References (5)
- http://www.openwall.com/lists/oss-security/2018/07/18/3 ExploitMailing ListThird Party Advisory
- https://github.com/enzo1982/mp4v2/releases/tag/v2.1.0
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6YCHVOYPIBGM5HYUMQ77KZH2IHSITKVE/ vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRSO2IMK6P7MOIZWGWKONPIEHKBA7WL3/ vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GISUIWPKBWPXORUFNWBGFTKQS7UUVUC4/ vendor-advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jul 19, 2018
Updated Aug 5, 2024
Reserved Jul 18, 2018
Link CVE-2018-14403
CISA Vulnrichment
Updated n/a