A null pointer dereference bug affects the 16.02 and many old versions of p7zip
Published Nov 12, 2016
7.5
HIGHCVSS 3.0
EPSS 7.02%
Description
A null pointer dereference bug affects the 16.02 and many old versions of p7zip. A lack of null pointer check for the variable folders.PackPositions in function CInArchive::ReadAndDecodePackedStreams in CPP/7zip/Archive/7z/7zIn.cpp, as used in the 7z.so library and in 7z applications, will cause a crash and a denial of service when decoding malformed 7z files.
Affected products
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:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/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 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.02% (0.07016) | 93.98th | v5 (v2026.06.15) |
| Sep 22, 2026 | 7.02% (0.07016) | 93.88th | v5 (v2026.06.15) |
| Sep 21, 2026 | 5.80% (0.05805) | 92.85th | v5 (v2026.06.15) |
| Sep 6, 2026 | 7.02% (0.07016) | 93.73th | v5 (v2026.06.15) |
| Sep 5, 2026 | 5.80% (0.05805) | 92.69th | v5 (v2026.06.15) |
| Aug 30, 2026 | 7.02% (0.07016) | 93.70th | v5 (v2026.06.15) |
| Aug 28, 2026 | 5.80% (0.05805) | 92.65th | v5 (v2026.06.15) |
| Aug 24, 2026 | 7.02% (0.07016) | 93.67th | v5 (v2026.06.15) |
| Aug 23, 2026 | 5.80% (0.05805) | 92.62th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.02% (0.07016) | 93.32th | v5 (v2026.06.15) |
| Aug 11, 2025 | 2.15% (0.02148) | 83.53th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.04% (0.01039) | 75.42th | v4 (v2025.03.14) |
| Mar 29, 2025 | 11.03% (0.11033) | 89.04th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.04% (0.01039) | 75.88th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.18% (0.00176) | 56.00th | v3 (v2023.03.01) |
| Jun 22, 2024 | 0.18% (0.00176) | 54.91th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.18% (0.00176) | 52.90th | 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) |
References (4)
- http://www.securityfocus.com/bid/94294 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://github.com/yangke/7zip-null-pointer-dereference x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://sourceforge.net/p/p7zip/bugs/185/ x_refsource_MISCIssue TrackingThird Party Advisory
- https://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/ x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/94294 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://github.com/yangke/7zip-null-pointer-dereference | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://sourceforge.net/p/p7zip/bugs/185/ | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/ | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.