CVE-2026-89422

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 ImpacttotalSuccessful exploitation gives total 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

0.46% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 39.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

Deferred. NVD last modified this record on 2026-09-22.

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

2026-09-22 08:49Z1 MO AGO

Last updated

2026-09-22 13:08Z1 MO AGO

Reserved

2026-09-11

Assigning CNA

EEF

Record state

PUBLISHED

Severity

Critical (CVSS 9.3)

CNA CVSS vector

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

Weaknesses

• CWE-322Key Exchange without Entity AuthenticationBase

Data version

5.2

Document digest

36cc34b887c5173a919e0e736b23c47c47853123c067b4e0806f9d629a4564c0

• github.comGitHub Advisoryhttps://github.com/erlang/otp/security/advisories/GHSA-rgxr-4g4w-j875relatedvendor-advisory
• cna.erlef.orgEEF CNA record for CVE-2026-89422https://cna.erlef.org/cves/CVE-2026-89422.htmlrelated
• osv.devOSV record EEF-CVE-2026-89422https://osv.dev/vulnerability/EEF-CVE-2026-89422related
• www.erlang.orgErlang/OTP version orderinghttps://www.erlang.org/doc/system/versions.html#order-of-versionsx_version-scheme
• github.comIntroducing commit 21b8a1b in erlang/otphttps://github.com/erlang/otp/commit/21b8a1b0ad0adf200682b3854bc50114ab2b8c62related
• github.comFix commit afec515 in erlang/otphttps://github.com/erlang/otp/commit/afec5156361bb50d3607c7c1a453c19b9149b324patch
• github.comFix commit 98c66c8 in erlang/otphttps://github.com/erlang/otp/commit/98c66c858113949c4262d26cd7d426c4b09d2b35patch
• github.comFix commit fd1d9d0 in erlang/otphttps://github.com/erlang/otp/commit/fd1d9d07fc92ec0d59f96dfb66182195882bb7ddpatch