w3m: Out-of-bounds heap write due to negative array index
Published Dec 12, 2016
8.8
HIGHCVSS 3.0
EPSS 3.18%
Description
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. w3m doesn't properly validate the value of tag attribute, which allows remote attackers to cause a denial of service (heap buffer overflow crash) and possibly execute arbitrary code via a crafted HTML page.
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:R/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
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 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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.18% (0.03181) | 87.62th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.18% (0.03181) | 86.36th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.54% (0.00537) | 65.52th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.39% (0.01390) | 86.92th | v3 (v2023.03.01) |
| May 8, 2024 | 1.39% (0.01390) | 86.29th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.39% (0.01390) | 84.29th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.67% (0.03666) | 85.01th | v2 (v2022.01.01) |
| Oct 22, 2022 | 3.67% (0.03666) | 84.51th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.25% (0.03249) | 82.64th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.25% (0.03249) | 65.32th | v2 (v2022.01.01) |
References (9)
- http://www.openwall.com/lists/oss-security/2016/11/18/3 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/94407 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2016-9424 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1399665 Issue Tracking
- https://github.com/tats/w3m/blob/master/ChangeLog x_refsource_CONFIRMIssue TrackingPatch
- https://github.com/tats/w3m/issues/12 x_refsource_CONFIRMIssue TrackingPatch
- https://nvd.nist.gov/vuln/detail/CVE-2016-9424
- https://security.gentoo.org/glsa/201701-08 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-9424
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2016/11/18/3 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.securityfocus.com/bid/94407 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2016-9424 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1399665 | Issue Tracking | |
| https://github.com/tats/w3m/blob/master/ChangeLog | x_refsource_CONFIRMIssue TrackingPatch | |
| https://github.com/tats/w3m/issues/12 | x_refsource_CONFIRMIssue TrackingPatch | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-9424 | ||
| https://security.gentoo.org/glsa/201701-08 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2016-9424 |
Change history (0)
No recorded changes yet.