unzip: Heap-based buffer overflow in fileio.c:UzpPassword function allows code execution
Published Feb 9, 2018
7.8
HIGHCVSS 3.0
EPSS 30.07%
Description
A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution.
Affected products
No data.
- ≤ 6.00
No data.
Red Hat Enterprise Linux 5
unzip
Will not fix
Red Hat Enterprise Linux 6
unzip
Will not fix
Red Hat Enterprise Linux 7
unzip
Will not fix
Red Hat Enterprise Linux 8
unzip
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | unzip | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | unzip | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | unzip | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | unzip | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the versions of unzip as shipped with Red Hat Enterprise Linux 5, 6 and 7. Red Hat Product Security has rated this issue as having Low security impact. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AV:N/AC:M/Au:N/C:P/I:P/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 3, 2026.
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 (35 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 30.07% (0.30066) | 98.17th | v5 (v2026.06.15) |
| Sep 22, 2026 | 29.97% (0.29968) | 98.13th | v5 (v2026.06.15) |
| Sep 21, 2026 | 32.98% (0.32975) | 98.33th | v5 (v2026.06.15) |
| Sep 6, 2026 | 29.97% (0.29968) | 98.08th | v5 (v2026.06.15) |
| Sep 5, 2026 | 32.98% (0.32975) | 98.29th | v5 (v2026.06.15) |
| Aug 30, 2026 | 29.97% (0.29968) | 98.08th | v5 (v2026.06.15) |
| Aug 28, 2026 | 32.98% (0.32975) | 98.28th | v5 (v2026.06.15) |
| Aug 24, 2026 | 29.97% (0.29968) | 98.06th | v5 (v2026.06.15) |
| Aug 23, 2026 | 32.98% (0.32975) | 98.27th | v5 (v2026.06.15) |
| Jun 15, 2026 | 30.89% (0.30885) | 98.01th | v5 (v2026.06.15) |
| Feb 20, 2026 | 63.56% (0.63564) | 98.37th | v4 (v2025.03.14) |
| Dec 4, 2025 | 65.33% (0.65327) | 98.39th | v4 (v2025.03.14) |
| Nov 21, 2025 | 61.24% (0.61237) | 98.22th | v4 (v2025.03.14) |
| Nov 18, 2025 | 33.26% (0.33261) | 96.68th | v4 (v2025.03.14) |
| Oct 14, 2025 | 61.24% (0.61237) | 98.20th | v4 (v2025.03.14) |
| Aug 11, 2025 | 65.33% (0.65327) | 98.40th | v4 (v2025.03.14) |
| Jun 19, 2025 | 45.31% (0.45308) | 97.44th | v4 (v2025.03.14) |
| Mar 30, 2025 | 36.97% (0.36968) | 96.83th | v4 (v2025.03.14) |
| Mar 29, 2025 | 41.49% (0.41492) | 96.12th | v4 (v2025.03.14) |
| Mar 28, 2025 | 36.97% (0.36968) | 96.83th | v4 (v2025.03.14) |
| Mar 27, 2025 | 41.49% (0.41492) | 96.94th | v4 (v2025.03.14) |
| Mar 26, 2025 | 36.97% (0.36968) | 96.79th | v4 (v2025.03.14) |
| Mar 25, 2025 | 41.49% (0.41492) | 97.11th | v4 (v2025.03.14) |
| Mar 17, 2025 | 36.97% (0.36968) | 96.79th | v4 (v2025.03.14) |
| Jul 20, 2024 | 1.19% (0.01191) | 85.30th | v3 (v2023.03.01) |
| Apr 17, 2024 | 1.19% (0.01191) | 84.92th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.19% (0.01191) | 82.92th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.53% (0.01532) | 73.83th | v2 (v2022.01.01) |
| Nov 6, 2022 | 1.53% (0.01532) | 73.29th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.49% (0.01490) | 71.53th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.49% (0.01490) | 50.61th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.81% (0.01811) | 35.12th | v1 |
| Jan 6, 2022 | 1.81% (0.01811) | 34.42th | v1 |
| Sep 1, 2021 | 1.81% (0.01811) | 74.42th | v1 |
| Apr 14, 2021 | 1.81% (0.01811) | 0.00th | v1 |
References (8)
- https://access.redhat.com/security/cve/CVE-2018-1000035 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1537043 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2020/01/msg00026.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2018-1000035
- https://sec-consult.com/en/blog/advisories/multiple-vulnerabilities-in-infozip-unzip/index.html x_refsource_MISCThird Party Advisory
- https://security.gentoo.org/glsa/202003-58 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2018-1000035
- https://www.sec-consult.com/en/blog/advisories/multiple-vulnerabilities-in-infozip-unzip/index.html
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2018-1000035 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1537043 | Issue Tracking | |
| https://lists.debian.org/debian-lts-announce/2020/01/msg00026.html | mailing-listx_refsource_MLIST | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-1000035 | ||
| https://sec-consult.com/en/blog/advisories/multiple-vulnerabilities-in-infozip-unzip/index.html | x_refsource_MISCThird Party Advisory | |
| https://security.gentoo.org/glsa/202003-58 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2018-1000035 | ||
| https://www.sec-consult.com/en/blog/advisories/multiple-vulnerabilities-in-infozip-unzip/index.html |
Change history (0)
No recorded changes yet.