CVE-2026-42791

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 24.2% of scored records. A rank, not a probability.

NVD base score

6.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Modified. NVD last modified this record on 2026-10-26.

Red Hat severity

Low. 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

2026-05-27 12:23Z5 MO AGO

Last updated

2026-07-24 14:14Z3 MO AGO

Reserved

2026-04-29

Assigning CNA

EEF

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N

Weaknesses

• CWE-295Improper Certificate ValidationBase
• CWE-672Operation on a Resource after Expiration or ReleaseClass

Data version

5.2

Document digest

2cbc8cdc25b4283dcdcb61165f09effff039702be6cd6cafce3012020204f1e1

• github.comhttps://github.com/erlang/otp/security/advisories/GHSA-cjxj-wj6x-3fffvendor-advisoryrelated
• cna.erlef.orghttps://cna.erlef.org/cves/CVE-2026-42791.htmlrelated
• osv.devhttps://osv.dev/vulnerability/EEF-CVE-2026-42791related
• www.erlang.orghttps://www.erlang.org/doc/system/versions.html#order-of-versionsx_version-scheme
• github.comhttps://github.com/erlang/otp/commit/7995f1fdaee3da569bb810358ce0f546471d169bpatch
• github.comhttps://github.com/erlang/otp/commit/b3870e02405c709a872b01ba6086065620cdfe76patch