CVE-2015-8790

MEDIUMNVD 4.34.3—

4.3

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.

CVSS v3: 4.3
EG Score: 4.3(medium)
EPSS: 67.9%
KEV: Not listed

Published

January 29, 2016

Last Modified

May 6, 2026

References (16)

cve@mitrehttp://lists.matroska.org/pipermail/matroska-users/2015-October/006985.html
cve@mitrehttp://lists.opensuse.org/opensuse-updates/2016-01/msg00035.html
cve@mitrehttp://www.debian.org/security/2016/dsa-3538
cve@mitrehttp://www.securityfocus.com/bid/85307
cve@mitrehttp://www.securityfocus.com/bid/95124
cve@mitrehttp://www.talosintelligence.com/reports/TALOS-2016-0036/
cve@mitrehttps://github.com/Matroska-Org/libebml/blob/release-1.3.3/ChangeLog
cve@mitrehttps://github.com/Matroska-Org/libebml/commit/ababb64e0c792ad2a314245233db0833ba12036b
af854a3a-2127-422b-91ae-364da2661108http://lists.matroska.org/pipermail/matroska-users/2015-October/006985.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2016-01/msg00035.html
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2016/dsa-3538
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/85307
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/95124
af854a3a-2127-422b-91ae-364da2661108http://www.talosintelligence.com/reports/TALOS-2016-0036/
af854a3a-2127-422b-91ae-364da2661108https://github.com/Matroska-Org/libebml/blob/release-1.3.3/ChangeLog

Data Freshness Timeline

(refreshed 9× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:14 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-06 23:29 UTCOSV refresh
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore

Frequently asked(5)

What is CVE-2015-8790?

CVE-2015-8790 is a medium vulnerability published on January 29, 2016. 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.

When was CVE-2015-8790 disclosed?

CVE-2015-8790 was first published in the National Vulnerability Database on January 29, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2015-8790 actively exploited?

CVE-2015-8790 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 67.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2015-8790?

CVE-2015-8790 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2015-8790?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-8790, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2015-8790

📅 Published

🔄 Last Modified

🔗 References (16)