MEDIUM
There exists a heap-based buffer over-read in ff_vc1_pred_dc in vc1_block.c in Libav 12.3, which allows attackers to cause a denial-of-service via a crafted aac file
Published Oct 30, 2018
6.5
MEDIUMCVSS 3.0
EPSS 0.86%
Description
There exists a heap-based buffer over-read in ff_vc1_pred_dc in vc1_block.c in Libav 12.3, which allows attackers to cause a denial-of-service via a crafted aac file.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
6.5 MEDIUM NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.86% 0.00860
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.00860
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.86% (0.00860) | 57.05th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.86% (0.00860) | 56.95th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.08% (0.00081) | 35.05th | v3 (v2023.03.01) |
| Jun 26, 2024 | 0.08% (0.00081) | 34.86th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00081) | 32.83th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.42% (0.00416) | 10.04th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
Weaknesses (1)
References (1)
- https://bugzilla.libav.org/show_bug.cgi?id=1135 x_refsource_MISCExploitIssue TrackingThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://bugzilla.libav.org/show_bug.cgi?id=1135 | x_refsource_MISCExploitIssue TrackingThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Oct 30, 2018
Updated Aug 5, 2024
Reserved Oct 29, 2018
Link CVE-2018-18827
CISA Vulnrichment
Updated n/a