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CVE-2020-13844
Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow unauthorized…
Medium5.5EPSS 0.51%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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."
Timeline
ID reserved
By mitre
- 4 days later
· 4 days later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.51% · top 56% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
n/a
- affected n/a
References (7)
- https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/frequently-asked-questions (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/downloads/straight-line-speculation (opens in a new tab)x_refsource_MISCx_transferred
- https://gcc.gnu.org/pipermail/gcc-patches/2020-June/547520.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://lists.llvm.org/pipermail/llvm-dev/2020-June/142109.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- openSUSE-SU-2020:1692 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2020:1693 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-13844)Record last updated .