Arm Armv8-A core implementations utilizing speculative execution past unconditional…
Priority LOW 25CWE-203Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-203.
Summary
Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka "straight-line speculation."
Why it matters now
EPSS 0.00508 43rd percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:arm:cortex-a32_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Arm |
| cpe:2.3:h:arm:cortex-a32:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Arm |
| cpe:2.3:o:arm:cortex-a35_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Arm |
| cpe:2.3:h:arm:cortex-a35:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Arm |
| cpe:2.3:o:arm:cortex-a53_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Arm |
| cpe:2.3:h:arm:cortex-a53:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Arm |
| cpe:2.3:o:arm:cortex-a57_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Arm |
| cpe:2.3:h:arm:cortex-a57:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Arm |
| cpe:2.3:o:arm:cortex-a72_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Arm |
| cpe:2.3:h:arm:cortex-a72:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Arm |
- cpe:2.3:o:arm:cortex-a32_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Arm
- cpe:2.3:h:arm:cortex-a32:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Arm
- cpe:2.3:o:arm:cortex-a35_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Arm
- cpe:2.3:h:arm:cortex-a35:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Arm
- cpe:2.3:o:arm:cortex-a53_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Arm
- cpe:2.3:h:arm:cortex-a53:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Arm
- cpe:2.3:o:arm:cortex-a57_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Arm
- cpe:2.3:h:arm:cortex-a57:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Arm
- cpe:2.3:o:arm:cortex-a72_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Arm
- cpe:2.3:h:arm:cortex-a72:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Arm
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:arm:cortex-a73_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Arm |
| cpe:2.3:h:arm:cortex-a73:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Arm |
| cpe:2.3:o:arm:cortex-a34_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Arm |
| cpe:2.3:h:arm:cortex-a34:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Arm |
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* | 15.1 | Vulnerable | openSUSE |
| cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* | 15.2 | Vulnerable | openSUSE |
- cpe:2.3:o:arm:cortex-a73_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Arm
- cpe:2.3:h:arm:cortex-a73:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Arm
- cpe:2.3:o:arm:cortex-a34_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Arm
- cpe:2.3:h:arm:cortex-a34:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Arm
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
- cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* Versions 15.2 Vulnerable ·openSUSE
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 9 | Affected | No fix planned: Will not fix |
Not affected: 5 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise MRG 2
Timeline
- 2026-10-02 Threatist record created from CVE-2020-13844
- 2026-10-03 Alias added: GHSA-jwjh-w2wp-2gvv
References
Advisory 6
- https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability
- https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/frequently-asked-questions
- https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/downloads/straight-line-speculation
- http://lists.llvm.org/pipermail/llvm-dev/2020-June/142109.html
- openSUSE-SU-2020:1692
- openSUSE-SU-2020:1693
Sources
- CVE-2020-13844 · CVE Program
- CVE-2020-13844 · NVD
- FIRST EPSS
- GHSA-jwjh-w2wp-2gvv · GitHub Advisory Database · CC BY 4.0
- CVE-2020-13844 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences