CVE-2018-11070

RSA BSAFE Crypto-J versions prior to 6.2.4 and RSA BSAFE SSL-J versions prior to 6.2.4 contain a Covert Timing Channel vulnerability during PKCS #1 unpadding operations, also known as a Bleichenbacher attack. A remote attacker may be able to recover a RSA key.

Published: 2018-09-11 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2018-11070 is rated Moderate Risk (50.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.66%). Core evidence: EPSS rose +1.32% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-11070

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.33% 1.66% +1.32%
2 2026-03-28 0.44% 0.33% -0.11%
3 2025-03-17 0.44%

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-11070

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
2.2 3.6 [email protected]
5.9 3.0 MEDIUM
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
2.2 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
8.6 2.9 [email protected]

Weakness enumeration for CVE-2018-11070

Affected software / configurations for CVE-2018-11070

Vendor Product Version Raw CPE
dell bsafe_crypto-j < 6.2.4 cpe:2.3:a:dell:bsafe_crypto-j:*:*:*:*:*:*:*:*
dell rsa_bsafe_ssl-j < 6.2.4 cpe:2.3:a:dell:rsa_bsafe_ssl-j:*:*:*:*:*:*:*:*

References for CVE-2018-11070

URL Tags
http://www.securitytracker.com/id/1041614 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1041615 Third Party Advisory VDB Entry
https://seclists.org/fulldisclosure/2018/Sep/7 Mailing List Third Party Advisory
cvelogic Threat Intelligence