No exploitation reportedFix available

CVE-2019-3731

Q: Is CVE-2019-3731 actively exploited?

Active exploitation of CVE-2019-3731 has not been confirmed. Its EPSS score was 1.4% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2019-3731?

CVE-2019-3731 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

No exploitation reported by the sources we read.

Published2019-09-30
Fixed in4.4.0 · 4.0.13
WeaknessCWE-203 · CWE-310

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

RSA BSAFE Crypto-C Micro Edition versions prior to 4.1.4 and RSA Micro Edition Suite versions prior to 4.4 are vulnerable to an Information Exposure Through Timing Discrepancy. A malicious remote user could potentially exploit this vulnerability to extract information leaving data at risk of exposure.

Timeline

dates in UTC

2019-09-3022:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-3731?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-3731?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Dell bsafe micro-edition-suite

Branch	Affected	Fixed in	Source
4.x	≥ 4.1.0, < 4.4.0	4.4.0	NVD
4.0	≥ 4.0.0, < 4.0.13	4.0.13	NVD

Dell bsafe crypto-c-micro-edition

Branch	Affected	Fixed in	Source
4.1	< 4.1.4	4.1.4	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Dell bsafe micro-edition-suite to 4.4.0 · 4.0.13

Advisories and patches

www.dell.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
CNACVSS 3.05.9read 2026-10-23
NVDCVSS 2.05read 2026-10-23
CNAweakness (CWE)CWE-310read 2026-10-23
NVDweakness (CWE)CWE-203read 2026-10-23
FIRST EPSSEPSS score1.4 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: 2019-09-30
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-3731?

Is CVE-2019-3731 actively exploited?

Active exploitation of CVE-2019-3731 has not been confirmed. Its EPSS score was 1.4% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-3731?

CVE-2019-3731 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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