What is CVE-2026-45787?

CVE-2026-45787 is a critical-severity vulnerability in Electerm, classified under Inadequate Encryption Strength. CVSS score: 9.1/10. Published 2026-05-28.

How severe is CVE-2026-45787?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Electerm

CVE-2026-45787

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to 3.9.5, deterministic AES-192-CBC with a fixed zero IV, constant KDF salt, and no MAC leads to confidentiality and integrity failures for synced bookmark/profile data. Attackers can crack common passwords across installs and perform undetected ciphertext bit-flips to alter config/bookmarks. This vulnerability is fixed in 3.9.5.

Published 2026-05-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.001 (3.6th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 3.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Electerm — versions < 3.9.5
Electerm Project

Weakness classification (CWE)

References

github.com/electerm/electerm/security/advisories/GHSA-g29v-q6h7-76wh (Patch, Vendor Advisory)
github.com/electerm/electerm/commit/9dd8295e37d53396b980cd45dfc5ed11ad79b937 (Patch)

Frequently asked questions

What is CVE-2026-45787?: CVE-2026-45787 is a critical-severity vulnerability in Electerm, classified under Inadequate Encryption Strength. CVSS score: 9.1/10. Published 2026-05-28.
How severe is CVE-2026-45787?: Critical severity. CVSS v3 base score is 9.1 out of 10.