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Fencer Vulns
medium 4.3

CVE-2026-62641 json

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 s…

published 2026-07-14 3 mo ago modified 2026-10-24 15 d ago also EUVD-2026-43745

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

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.

Patch / fix

  • Roundcube Webmail 1.6.17, 1.7.2
  • roundcube Debian 12 1.6.5+dfsg-1+deb12u10
  • roundcube Debian 13 1.6.17+dfsg-0+deb13u1
  • roundcube Debian 14 1.6.17+dfsg-1

debian advisories DEBIAN-CVE-2026-62641

  • roundcubemail openSUSE Leap 16.0 1.6.20-bp160.1.1
  • roundcubemail openSUSE Tumbleweed 1.6.19-1.1

opensuse advisories openSUSE-SU-2026:22195-1openSUSE-SU-2026:12169-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-62641 updated cvss 4.3

roundcubemail: Roundcube Webmail: Denial of Service via crafted TNEF compressed-RTF size

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • Roundcube Webmail

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.