Is CVE-2026-42245 actively exploited?

No active exploitation of CVE-2026-42245 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42245 be exploited remotely?

Yes. CVE-2026-42245 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42245?

CVE-2026-42245 has a CVSS score of 2.3 (LOW).

HOME VULNERABILITIESCVE-2026-42245

LOW

CVE-2026-42245

CWE-407Published: May 9, 2026· Updated: May 13, 2026

2.3

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:19.2th

Official Description

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, Net::IMAP::ResponseReader has quadratic time complexity when reading large responses containing many string literals. A hostile server can send responses which are crafted to exhaust the client's CPU for a denial of service attack. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4.

NVD Source

Technical Analysis

CVE-2026-42245 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (P) is needed, which slightly reduces the risk of mass automated attacks.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionP

ScopeX

Impact

Confidentiality

Integrity

Availability

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/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