CVE-2026-42772

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.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

0.47% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 41.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-10-08.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2026-09-29 15:32Z1 MO AGO

Last updated

2026-09-30 20:11Z28 DAYS AGO

Reserved

2026-04-29

Assigning CNA

openssl

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-407Inefficient Algorithmic ComplexityClass
• CWE-770Allocation of Resources Without Limits or ThrottlingBase

Data version

5.2

Document digest

fec7b7a11e967651d2584cd4209a8ccdfe2a7bbfd03771b3a0ed5d2236857610

• openssl-library.orgOpenSSL Advisoryhttps://openssl-library.org/news/secadv/20260929.txtvendor-advisory
• github.com4.0.3 git commithttps://github.com/openssl/openssl/commit/f42ae513bbda513b3c121d54834040ee4a0eae1apatch
• github.com3.6.5 git commithttps://github.com/openssl/openssl/commit/32d0ed8afe1b8c3e7ece725b44663da3d7087a09patch
• github.com3.5.9 git commithttps://github.com/openssl/openssl/commit/ca8402e273af4de5b3f04fa61a0f0c02ce3ae20epatch
• github.com3.4.8 git commithttps://github.com/openssl/openssl/commit/eb2becc0a4baea7f3050a247834d0e5c2ebe1773patch