CRITICAL
libav before 12.1 is vulnerable to an invalid read of size 1 due to NULL pointer dereferencing in the nsv_read_chunk function in libavformat/nsvdec.c
Published May 18, 2017
9.8
CRITICALCVSS 3.0
EPSS 1.91%
Description
libav before 12.1 is vulnerable to an invalid read of size 1 due to NULL pointer dereferencing in the nsv_read_chunk function in libavformat/nsvdec.c.
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.
1.91% 0.01906
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01906
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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.91% (0.01906) | 79.00th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.91% (0.01906) | 76.98th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.26% (0.00264) | 66.50th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.26% (0.00264) | 65.15th | v3 (v2023.03.01) |
| May 8, 2023 | 0.26% (0.00264) | 62.51th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.19% (0.00187) | 54.22th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00833) | 24.58th | v1 |
| Jan 6, 2022 | 0.83% (0.00833) | 23.96th | v1 |
| Sep 1, 2021 | 0.83% (0.00833) | 57.50th | v1 |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
Weaknesses (1)
References (3)
- http://www.securityfocus.com/bid/98548 vdb-entryx_refsource_BID
- https://bugzilla.libav.org/show_bug.cgi?id=1039 x_refsource_MISCIssue Tracking
- https://github.com/libav/libav/commit/fe6eea99efac66839052af547426518efd970b24 x_refsource_MISCIssue TrackingPatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/98548 | vdb-entryx_refsource_BID | |
| https://bugzilla.libav.org/show_bug.cgi?id=1039 | x_refsource_MISCIssue Tracking | |
| https://github.com/libav/libav/commit/fe6eea99efac66839052af547426518efd970b24 | x_refsource_MISCIssue TrackingPatchThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published May 18, 2017
Updated Aug 5, 2024
Reserved May 18, 2017
Link CVE-2017-9051
CISA Vulnrichment
Updated n/a