CVE-2017-20240

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.31% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 24.6% of scored records. A rank, not a probability.

NVD base score

5.9 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD analysis status

Deferred. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-06-12 13:19Z4 MO AGO

Last updated

2026-06-12 16:59Z4 MO AGO

Reserved

2026-05-26

Assigning CNA

CPANSec

Record state

PUBLISHED

Severity

Medium (CVSS 5.9)

CNA CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weaknesses

• CWE-208Observable Timing DiscrepancyBase

Data version

5.2

Document digest

1425f0729832c562db44e9053d12ac5d06816f8e424f0460e12baa82a33a03c2

• github.comhttps://github.com/arodland/Crypt-PBKDF2/pull/6issue-tracking
• metacpan.orghttps://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.161520/source/lib/Crypt/PBKDF2.pm#L123-148
• metacpan.orghttps://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changesrelease-notes
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/06/12/3