HCL Sametime for iOS is impacted by a sensitive information disclosure. Hostnames information is written in application logs and certain URLs.
CVE-2026-21786
LOWPre-NVD 3.33.3—Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
Score 3.3 from GitHub Security Advisory (severity: LOW) published 2026-03-05. a secondary CVSS source baseline 3.3; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
3.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 3.3Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 3.3
- EG Score
- 3.3(medium)
- EG Risk
- 19(Track)EG Risk 19/100SSVC: 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 computedSeverity33% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 1%
- KEV
- Not listed
Published
March 5, 2026
Last Modified
June 17, 2026
References (1)
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 3× in last 7d / 3× 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.
- 2026-07-27 14:13 UTCEPSS rescore
- 2026-07-27 13:52 UTCEG score recompute
- 2026-07-27 13:51 UTCGHSA enrichment
Related CVEs(same CWE)
Same CWE
10 shownCWE-532
- CVE-2016-0898EG 10.0CRITICAL
- CVE-2018-1264NVD 9.1EG 9.8CRITICAL
- CVE-2018-16049EG 9.8CRITICAL
- CVE-2018-11717EG 9.8EPSS p95CRITICAL
- CVE-2018-11716EG 9.8EPSS p96CRITICAL
- CVE-2018-0042EG 9.8CRITICAL
- CVE-2018-1072NVD 5.0EG 9.8CRITICAL
- CVE-2018-1117NVD 5.0EG 9.8CRITICAL
- CVE-2018-11320EG 9.8CRITICAL
- CVE-2018-1000123EG 9.8CRITICAL
Frequently asked(5)
What is CVE-2026-21786?
CVE-2026-21786 is a low vulnerability published on March 5, 2026. HCL Sametime for iOS is impacted by a sensitive information disclosure. Hostnames information is written in application logs and certain URLs.
When was CVE-2026-21786 disclosed?
CVE-2026-21786 was first published in the National Vulnerability Database on March 5, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-21786 actively exploited?
CVE-2026-21786 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 99.0% of all scored CVEs.
What is the CVSS score of CVE-2026-21786?
CVE-2026-21786 has a CVSS v3 base score of 3.3 (NVD).
How do I remediate CVE-2026-21786?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-21786, 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-2026-21786
Is Your Infrastructure Affected by CVE-2026-21786?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.