MEDIUM
The EbmlUnicodeString::UpdateFromUTF8 function in libEBML before 1.3.3 allows context-dependent attackers to obtain sensitive information from process heap memory via a crafted UTF-8 string, which triggers an invalid memory access
Published Jan 29, 2016
4.3
MEDIUMCVSS 3.0
EPSS 1.85%
Description
The EbmlUnicodeString::UpdateFromUTF8 function in libEBML before 1.3.3 allows context-dependent attackers to obtain sensitive information from process heap memory via a crafted UTF-8 string, which triggers an invalid memory access.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
4.3 MEDIUM NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact Low
Integrity Impact None
Availability Impact None
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.85% 0.01848
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01848
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 | 1.85% (0.01848) | 78.31th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.85% (0.01848) | 76.25th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.63% (0.00626) | 68.44th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.40% (0.00400) | 74.42th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.40% (0.00400) | 72.89th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.40% (0.00400) | 69.46th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.18% (0.01183) | 61.76th | v2 (v2022.01.01) |
| Oct 19, 2022 | 1.18% (0.01183) | 60.79th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.18% (0.01183) | 58.77th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.18% (0.01183) | 35.15th | v2 (v2022.01.01) |
Weaknesses (1)
References (8)
- http://lists.matroska.org/pipermail/matroska-users/2015-October/006985.html mailing-listx_refsource_MLISTVendor Advisory
- http://lists.opensuse.org/opensuse-updates/2016-01/msg00035.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2016/dsa-3538 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/85307 vdb-entryx_refsource_BID
- http://www.securityfocus.com/bid/95124 vdb-entryx_refsource_BID
- http://www.talosintelligence.com/reports/TALOS-2016-0036/ x_refsource_MISC
- https://github.com/Matroska-Org/libebml/blob/release-1.3.3/ChangeLog x_refsource_CONFIRMVendor Advisory
- https://github.com/Matroska-Org/libebml/commit/ababb64e0c792ad2a314245233db0833ba12036b x_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| http://lists.matroska.org/pipermail/matroska-users/2015-October/006985.html | mailing-listx_refsource_MLISTVendor Advisory | |
| http://lists.opensuse.org/opensuse-updates/2016-01/msg00035.html | vendor-advisoryx_refsource_SUSE | |
| http://www.debian.org/security/2016/dsa-3538 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/85307 | vdb-entryx_refsource_BID | |
| http://www.securityfocus.com/bid/95124 | vdb-entryx_refsource_BID | |
| http://www.talosintelligence.com/reports/TALOS-2016-0036/ | x_refsource_MISC | |
| https://github.com/Matroska-Org/libebml/blob/release-1.3.3/ChangeLog | x_refsource_CONFIRMVendor Advisory | |
| https://github.com/Matroska-Org/libebml/commit/ababb64e0c792ad2a314245233db0833ba12036b | x_refsource_CONFIRM |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 29, 2016
Updated Aug 6, 2024
Reserved Jan 29, 2016
Link CVE-2015-8790
CISA Vulnrichment
Updated n/a