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TI-2026-30119 Aliases CVE-2026-41564

CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking

Priority HIGH 72CWE-335Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking. The Crypt::PK::RSA, Crypt::PK::DSA, Crypt::PK::DH, Crypt::PK::ECC, Crypt::PK::Ed25519 and Crypt::PK::X25519 modules seed a per-object PRNG state in their constructors and reuse it without fork detection. A Crypt::PK::* object created before `fork()` shares byte-identical PRNG state with every child process, and any randomized operation they perform can produce identical output, including key generation. Two ECDSA or DSA signatures from different processes are enough to recover the signing private key through nonce-reuse key recovery. This affects preforking services such as the Starman web server, where a Crypt::PK::* object loaded at startup is inherited by every worker process.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00431 37th percentileScored 2026-11-07
Fix Fixed CryptX (MIK): 0.088

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MIKCryptXbefore 0.0880.088Patch availableCNA
  • CryptX VendorMIK Affected before 0.088 Fixed in 0.088 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:dcit:cryptx:*:*:*:*:*:perl:*:*before 0.088VulnerableDcit
  • cpe:2.3:a:dcit:cryptx:*:*:*:*:*:perl:*:* Versions before 0.088 Vulnerable ·Dcit

Remediation

  • Fix · CNA CryptX (MIK) Fixed in 0.088

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41564

References

Patch 1

Advisory 2

Other 1

  • TI-2025-27306 CryptX for Perl before version 0.065 contains a dependency that may be susceptible to… CVSS 3.1CRITICAL 9.8
  • TI-2025-27308 Perl CryptX before version 0.087 contains a dependency that may be susceptible to an… CVSS 3.1CRITICAL 9.8
  • TI-2026-30120 Stack-based buffer overflow in MIK CryptX CVSS 3.1HIGH 7.5
  • TI-2026-07597 Crypt::ScryptKDF versions through 0.010 for Perl uses insecure random number source when… CVSS 3.1MEDIUM 4.8
  • TI-2026-11599 CryptX versions before 0.088_001 for Perl compare AEAD authentication tags in… CVSS 3.1LOW 3.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences