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TI-2021-18336 Aliases CVE-2021-41614GHSA-c5gr-hg39-gr5m

An issue was discovered in the controller unit of the OpenRISC mor1kx processor.

Priority LOW 35CWE-276Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

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

Summary

An issue was discovered in the controller unit of the OpenRISC mor1kx processor. The read/write access permissions to the Exception Program Counter Register (EPCR) are not implemented correctly. User programs from an unauthorized privilege level can make read/write accesses to EPCR.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00162 5th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:openrisc:mor1kx_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableOpenrisc
cpe:2.3:h:openrisc:mor1kx:-:*:*:*:*:*:*:*not specified by NVDRunning onOpenrisc
  • cpe:2.3:o:openrisc:mor1kx_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Openrisc
  • cpe:2.3:h:openrisc:mor1kx:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Openrisc

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-41614
  2. 2026-10-03 Alias added: GHSA-c5gr-hg39-gr5m

References

Advisory 1

Other 1

  • TI-2021-18334 An issue was discovered in the ALU unit of the OpenRISC mor1kx processor. CVSS 3.1HIGH 8.8
  • TI-2021-18335 An issue was discovered in the controller unit of the OpenRISC mor1kx processor. CVSS 3.1MEDIUM 4.3

Sources

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