In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, the TNEF decoder was subject to denial of service via a crafted compressed-RTF size.
CVE-2026-62641
MEDIUMPre-NVD 4.34.3—Trending — 4 sources updated this week
EchelonGraph scoreHIGH confidence
Score 4.3 from GitHub Security Advisory published 2026-07-14. a secondary CVSS source baseline 4.3; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.3Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.3
- EG Score
- 4.3(high)
- EPSS
- 14.2%
- KEV
- Not listed
Published
July 14, 2026
Last Modified
July 15, 2026
References (5)
- cve@mitrehttps://github.com/roundcube/roundcubemail/commit/6d1004fd3764a9606c53130b322c0f295c38be64
- cve@mitrehttps://github.com/roundcube/roundcubemail/commit/bf253c72d4293c93fda511b8464fe9cb34b522c1
- cve@mitrehttps://github.com/roundcube/roundcubemail/releases/tag/1.6.17
- cve@mitrehttps://github.com/roundcube/roundcubemail/releases/tag/1.7.2
- cve@mitrehttps://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2
Vendor Advisories for CVE-2026-62641(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 5× in last 7d / 5× 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 17:55 UTCEG score recompute
- 2026-07-15 17:55 UTCGHSA enrichment
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-14 16:11 UTCEG score recompute
- 2026-07-14 16:10 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-62641?
CVE-2026-62641 is a medium vulnerability published on July 14, 2026. In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, the TNEF decoder was subject to denial of service via a crafted compressed-RTF size.
When was CVE-2026-62641 disclosed?
CVE-2026-62641 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-2026-62641 actively exploited?
CVE-2026-62641 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-62641?
CVE-2026-62641 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-62641?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62641, 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-2026-62641
Is Your Infrastructure Affected by CVE-2026-62641?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.