xchat: Heap-based buffer overflow by processing UTF-8 line from server containing characters outside BMP
Published Feb 21, 2020
9.8
CRITICALCVSS 3.1
EPSS 4.28%
Description
Heap-based buffer overflow in Xchat-WDK before 1499-4 (2012-01-18) xchat 2.8.6 on Maemo architecture could allow remote attackers to cause a denial of service (xchat client crash) or execute arbitrary code via a UTF-8 line from server containing characters outside of the Basic Multilingual Plane (BMP).
Affected products
-
- Version before 1499-4 (2012-01-18)StatusaffectedConstraints-
- Version
-
- Version 2.8.6 on Maemo architectureStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
No data.
Red Hat Enterprise Linux 4
xchat
Not affected
Red Hat Enterprise Linux 5
xchat
Not affected
Red Hat Enterprise Linux 6
xchat
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | xchat | Not affected | n/a |
| Red Hat Enterprise Linux 5 | xchat | Not affected | n/a |
| Red Hat Enterprise Linux 6 | xchat | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of xchat as shipped with Red Hat Enterprise Linux 4, 5, and 6.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.28% (0.04284) | 90.80th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.18% (0.04180) | 89.58th | v5 (v2026.06.15) |
| Mar 30, 2025 | 5.89% (0.05888) | 89.65th | v4 (v2025.03.14) |
| Mar 29, 2025 | 12.67% (0.12667) | 89.94th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.89% (0.05888) | 89.89th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.97% (0.01965) | 89.21th | v3 (v2023.03.01) |
| May 8, 2023 | 1.97% (0.01965) | 86.97th | v3 (v2023.03.01) |
| Apr 24, 2023 | 2.20% (0.02204) | 87.78th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.84% (0.01839) | 86.40th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.69% (0.03693) | 85.03th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.69% (0.03693) | 83.51th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.69% (0.03693) | 66.67th | v2 (v2022.01.01) |
References (8)
- http://www.openwall.com/lists/oss-security/2012/02/01/9 x_refsource_MISCMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2012-0828 Vendor Advisory
- https://access.redhat.com/security/cve/cve-2012-0828 x_refsource_MISCThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=786391 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-0828 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2012-0828
- https://security-tracker.debian.org/tracker/CVE-2012-0828 x_refsource_MISCThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2012-0828
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2012/02/01/9 | x_refsource_MISCMailing ListThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2012-0828 | Vendor Advisory | |
| https://access.redhat.com/security/cve/cve-2012-0828 | x_refsource_MISCThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=786391 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-0828 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-0828 | ||
| https://security-tracker.debian.org/tracker/CVE-2012-0828 | x_refsource_MISCThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2012-0828 |
Change history (0)
No recorded changes yet.