How severe is CVE-2026-45787?

CVE-2026-45787 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-45787 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-45787?

CVE-2026-45787 affects Electerm Project Electerm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-45787?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-45787 have an EU (EUVD) identifier?

Yes. CVE-2026-45787 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32959.

When was CVE-2026-45787 published?

CVE-2026-45787 was published on 2026-05-28 and last updated on 2026-06-17.

CVE-2026-45787

CVE-2026-45787 is a critical-severity vulnerability in Electerm Project Electerm with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-326.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 6.0
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32959
Weakness: CWE-326
Affected product: Electerm Project Electerm
Published: 2026-05-28
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-45787?: CVE-2026-45787 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-45787 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-45787?: CVE-2026-45787 affects Electerm Project Electerm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-45787?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-45787 have an EU (EUVD) identifier?: Yes. CVE-2026-45787 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32959.
When was CVE-2026-45787 published?: CVE-2026-45787 was published on 2026-05-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:electerm_project:electerm:*:*:*:*:*:*:*:*

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