CVE-2015-8871

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Use-after-free vulnerability in the opj_j2k_write_mco function in j2k.c in OpenJPEG before 2.1.1 allows remote attackers to have unspecified impact via unknown vectors.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
85.8%
KEV
Not listed

Published

September 21, 2016

Last Modified

May 6, 2026

Advisory Details (8)

Auto-updated May 8, 2026
Patch available. Sources: redhat.
generic

[SECURITY] [DSA 3665-1] openjpeg2 security update

http://www.debian.org/security/2016/dsa-3665
generic

OpenJPEG: Multiple vulnerabilities (GLSA 201612-26) — Gentoo security

https://security.gentoo.org/glsa/201612-26
generic

Use-after-free in opj_j2k_write_mco · Issue #563 · uclouvain/openjpeg · GitHub

https://github.com/uclouvain/openjpeg/issues/563
generic

Fix potential use-after-free in opj_j2k_write_mco function · uclouvain/openjpeg@940100c · GitHub

https://github.com/uclouvain/openjpeg/commit/940100c28ae28931722290794889cf84a92c5f6f
generic

openjpeg/CHANGELOG.md at master · uclouvain/openjpeg · GitHub

https://github.com/uclouvain/openjpeg/blob/master/CHANGELOG.md
redhat Patch Available

1263359 – openjpeg: Use-after-free vulnerability in opj_j2k_write_mco

Affected: Red Hat Enterprise Linux 6 and 7.

https://bugzilla.redhat.com/show_bug.cgi?id=1263359
generic Patch Available

oss-security - Re: CVE Request : Use-after-free in openjpeg

http://www.openwall.com/lists/oss-security/2016/05/13/1
generic Patch Available

oss-security - CVE Request : Use-after-free in openjpeg

http://www.openwall.com/lists/oss-security/2015/09/15/4

Data Freshness Timeline

(refreshed 14× in last 7d / 42× 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.

Showing the most recent 100 of 111 total refreshes for this CVE.

  1. 2026-07-24 14:13 UTCEPSS rescore
  2. 2026-07-23 14:14 UTCEPSS rescore
  3. 2026-07-23 01:20 UTCEG score recompute
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  75. 2026-05-20 11:13 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2015-8871?
CVE-2015-8871 is a critical vulnerability published on September 21, 2016. Use-after-free vulnerability in the opjj2kwrite_mco function in j2k.c in OpenJPEG before 2.1.1 allows remote attackers to have unspecified impact via unknown vectors.
When was CVE-2015-8871 disclosed?
CVE-2015-8871 was first published in the National Vulnerability Database on September 21, 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-2015-8871 actively exploited?
CVE-2015-8871 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 85.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2015-8871?
CVE-2015-8871 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2015-8871?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-8871, 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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