Clam AntiVirus unmew11() Denial of Service Vulnerability
Published Oct 15, 2018
5.5
MEDIUMCVSS 3.0
EPSS 1.31%
Description
A vulnerability in ClamAV versions prior to 0.100.2 could allow an attacker to cause a denial of service (DoS) condition. The vulnerability is due to an error related to the MEW unpacker within the "unmew11()" function (libclamav/mew.c), which can be exploited to trigger an invalid read memory access via a specially crafted EXE file.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<0.100.2
- Version
Configuration 2
- 8.0
Configuration 3
- 12.04
- 14.04
- 16.04
- 18.04
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
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:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Nov 25, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.31% (0.01315) | 69.70th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.31% (0.01315) | 66.91th | v5 (v2026.06.15) |
| Nov 21, 2025 | 1.86% (0.01863) | 82.50th | v4 (v2025.03.14) |
| Nov 18, 2025 | 0.62% (0.00616) | 67.45th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.80% (0.01795) | 81.55th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.22% (0.00222) | 61.38th | v3 (v2023.03.01) |
| Oct 9, 2023 | 0.22% (0.00222) | 60.12th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.16% (0.00159) | 50.64th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.06% (0.02061) | 50.21th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.06% (0.02061) | 0.00th | v1 |
References (7)
- https://bugzilla.clamav.net/show_bug.cgi?id=12170 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/10/msg00014.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://secuniaresearch.flexerasoftware.com/advisories/83000/ third-party-advisoryx_refsource_SECUNIAPermissions RequiredThird Party Advisory
- https://security.gentoo.org/glsa/201904-12 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://usn.ubuntu.com/3789-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3789-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.flexera.com/company/secunia-research/advisories/SR-2018-23.html x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://bugzilla.clamav.net/show_bug.cgi?id=12170 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/10/msg00014.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://secuniaresearch.flexerasoftware.com/advisories/83000/ | third-party-advisoryx_refsource_SECUNIAPermissions RequiredThird Party Advisory | |
| https://security.gentoo.org/glsa/201904-12 | vendor-advisoryx_refsource_GENTOOThird Party Advisory | |
| https://usn.ubuntu.com/3789-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://usn.ubuntu.com/3789-2/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://www.flexera.com/company/secunia-research/advisories/SR-2018-23.html | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.