What is CVE-2018-6653?

CVE-2018-6653 is a medium-severity vulnerability in Comforte Swap, classified under Inadequate Encryption Strength. CVSS score: 5.3/10. Published 2018-03-01.

How severe is CVE-2018-6653?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Comforte Swap

CVE-2018-6653

comforte SWAP 1049 through 1069 and 20.0.0 through 21.5.3 (as used in SSLOBJ on HPE NonStop SSL T0910, and in the comforte SecurCS, SecurFTP, SecurLib/SSL-AT, and SecurTN products), after executing the RELOAD CERTIFICATES command, does not ensure that clients use a strong TLS cipher suite, which makes it easier for remote attackers to defeat intended cryptographic protection mechanisms by sniffing the network. This is fixed in 21.6.0.

Published 2018-03-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (32.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-326 — Inadequate Encryption Strength

References

support.hpe.com/hpsc/doc/public/display (Vendor Advisory)
comforte.com/cve-2018-6653/ (Third Party Advisory)

Frequently asked questions

What is CVE-2018-6653?: CVE-2018-6653 is a medium-severity vulnerability in Comforte Swap, classified under Inadequate Encryption Strength. CVSS score: 5.3/10. Published 2018-03-01.
How severe is CVE-2018-6653?: Medium severity. CVSS v3 base score is 5.3 out of 10.