Buffer Overflow vulnerability in OpenHTJ2K v.0.18.4 and before allows an attacker to execute arbitrary code via the openhtj2k_decoder_impl::invoke, invoke_line_based, invoke_line_based_stream, and invoke_line_based_predecoded function in source/core/interface/decoder.cpp
CVE-2026-51808
CRITICALPre-NVD 9.8Trending — 4 sources updated this weekElevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 0.0(none)
- EPSS
- 10.0%
- KEV
- Not listed
Published
July 14, 2026
Last Modified
July 15, 2026
Advisory Details (3)
Auto-updated Jul 15, 2026Patch available. Sources: github_pr, github_release.
github_pr Patch Available
fix: validate SOT tile index to prevent heap OOB info leak (CVE-2026-TBD)
Patch available: osamu620/OpenHTJ2K v0.18.5 (PR #320 merged 2026-04-28)
https://github.com/osamu620/OpenHTJ2K/pull/320github_release Patch Available
v0.18.5 - Security Fix: SOT Out-of-Bounds Tile Index Heap Info Leak
Patch available: osamu620/OpenHTJ2K v0.18.5
https://github.com/osamu620/OpenHTJ2K/releases/tag/v0.18.5generic
OpenHTJ2K/CHANGELOG at main · osamu620/OpenHTJ2K · GitHub
https://github.com/osamu620/OpenHTJ2K/blob/main/CHANGELOGVendor Advisories for CVE-2026-51808(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 6× 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.
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 14:09 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
- 2026-07-14 23:23 UTCNVD update
- 2026-07-14 22:45 UTCEG score recompute
- 2026-07-14 22:45 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-120
- CVE-2010-10016EG 10.0CRITICAL
- CVE-2012-10035EG 10.0CRITICAL
- CVE-2009-0948EG 9.8CRITICAL
- CVE-2006-3100EG 9.8CRITICAL
- CVE-2009-5041EG 9.8CRITICAL
- CVE-2010-5333EG 9.8EPSS 97%CRITICAL
- CVE-2013-1331NVD 7.8EG 9.0 KEVEPSS 100%HIGH
- CVE-2013-0641NVD 7.8EG 9.0 KEVEPSS 98%HIGH
- CVE-2012-2763NVD 0.0EG 9.0EPSS 100%NONE
- CVE-2011-4862NVD 0.0EG 9.0EPSS 100%NONE
Frequently asked(5)
What is CVE-2026-51808?
CVE-2026-51808 is a critical vulnerability published on July 14, 2026. Buffer Overflow vulnerability in OpenHTJ2K v.0.18.4 and before allows an attacker to execute arbitrary code via the openhtj2kdecoderimpl::invoke, invokelinebased, invokelinebasedstream, and invokelinebasedpredecoded function in source/core/interface/decoder.cpp
When was CVE-2026-51808 disclosed?
CVE-2026-51808 was first published in the National Vulnerability Database on July 14, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-51808 actively exploited?
CVE-2026-51808 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-51808?
CVE-2026-51808 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 0.0.
How do I remediate CVE-2026-51808?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-51808, 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.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-51808
Is Your Infrastructure Affected by CVE-2026-51808?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.