Systems with microprocessors utilizing speculative execution and that perform speculative reads of system registers may allow unauthorized d
Systems with microprocessors utilizing speculative execution and that perform speculative reads of system registers may allow unauthorized disclosure of system parameters to an attacker with local user access via a side-channel analysis, aka Rogue System Register Read (RSRE), Variant 3a.
- Published
- May 22, 2018
- Updated
- Jun 16, 2026
- EPSS
- 7.5% · 94th percentile
- CWE
- CWE-203
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Report tools
Action score
24
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.6 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 2 / 30 · 7.5%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| intel | atom c | cpe:2.3:h:intel:atom_c |
| intel | atom e | cpe:2.3:h:intel:atom_e |
| intel | atom z | cpe:2.3:h:intel:atom_z |
| intel | celeron j | cpe:2.3:h:intel:celeron_j |
| intel | celeron n | cpe:2.3:h:intel:celeron_n |
| intel | core i3 | cpe:2.3:h:intel:core_i3 |
| intel | core i5 | cpe:2.3:h:intel:core_i5 |
| intel | core i7 | cpe:2.3:h:intel:core_i7 |
| intel | core m | cpe:2.3:h:intel:core_m |
| intel | pentium | cpe:2.3:h:intel:pentium |
| intel | pentium j | cpe:2.3:h:intel:pentium_j |
| intel | pentium silver | cpe:2.3:h:intel:pentium_silver |
and 187 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- intel atom cc2308
- intel atom cc3308
- intel atom cc3338
- intel atom cc3508
- intel atom cc3538
- intel atom cc3558
- intel atom cc3708
- intel atom cc3750
- intel atom cc3758
- intel atom cc3808
- intel atom cc3830
- intel atom cc3850
- intel atom cc3858
- intel atom cc3950
- intel atom cc3955
- intel atom cc3958
- intel atom ee3805
- intel atom ee3815
- intel atom ee3825
- intel atom ee3826
Versions reported by the vendor
Affected version ranges reported by the assigning authority (intel). Independent of NVD's CPE analysis and usually ahead of it.
Intel Corporation Multiple
- Multipleaffected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | intel-microcode | before 3.20180703.1 | 3.20180703.1 |
| Debian:8 | intel-microcode | before 3.20180703.2~deb8u1 | 3.20180703.2~deb8u1 |
| Debian:9 | intel-microcode | before 3.20180703.2~deb9u1 | 3.20180703.2~deb9u1 |
| Debian:9 | intel-microcode | before 3.20180807a.1~deb9u1 | 3.20180807a.1~deb9u1 |
| openSUSE:Tumbleweed | spectre-meltdown-checker | before 26.36.0602723-1.1 | 26.36.0602723-1.1 |
| openSUSE:Tumbleweed | ucode-intel | before 20210608-1.2 | 20210608-1.2 |
| SUSE:Linux Enterprise Module for Basesystem 15 | ucode-intel | before 20180807-3.6.1 | 20180807-3.6.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 | ucode-intel | before 20180703-3.3.1 | 20180703-3.3.1 |
| SUSE:Linux Enterprise Point of Sale 11 SP3 | microcode_ctl | before 1.17-102.83.27.1 | 1.17-102.83.27.1 |
| SUSE:Linux Enterprise Point of Sale 11 SP3 | microcode_ctl | before 1.17-102.83.24.1 | 1.17-102.83.24.1 |
| SUSE:OpenStack Cloud 7 | ucode-intel | before 20180703-13.25.1 | 20180703-13.25.1 |
| SUSE:OpenStack Cloud 7 | ucode-intel | before 20180807-13.29.1 | 20180807-13.29.1 |
Same product
intel: all recordsOther highest-scoring records for the same primary product.
- CVE-2017-5753Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an at50Plan
- CVE-2017-5754Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information47Plan
- CVE-2017-5715Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information44Plan
- CVE-2018-3639Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior mem40Plan
- CVE-2018-3693Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an at25Monitor
- CVE-2018-9056Systems with microprocessors utilizing speculative execution may allow unauthorized disclosure of information to an attacker with local user22Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:intel-microcode | 3.20180703.1 · Debian:12 | Package registry (OSV) |
| opensuse:spectre-meltdown-checker | 26.36.0602723-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:ucode-intel | 20210608-1.2 · openSUSE:Tumbleweed | Package registry (OSV) |
| suse:microcode_ctl | 1.17-102.83.24.1 · SUSE:Linux Enterprise Point of Sale 11 SP3 | Package registry (OSV) |
| suse:ucode-intel | 20180703-3.3.1 · SUSE:Linux Enterprise Module for Basesystem 15 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
- ArmIntigriti · paid · up to $20,000
- Trusted FirmwareIntigriti · paid · up to $20,000
- Intel® Vulnerability Disclosure Program Intigriti · disclosure only (VDP)
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Local
- Attack complexity
- High
- Privileges required
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-203 · Observable DiscrepancyCVSS vector
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- support.lenovo.com/us/en/solutions/LEN-22133
- www.fujitsu.com/global/support/products/software/security/products-f/cve-2018-3639e.html
- www.securityfocus.com/bid/104228
- www.securitytracker.com/id/1040949
- www.securitytracker.com/id/1042004
- cert-portal.siemens.com/productcert/pdf/ssa-268644.pdf
- cert-portal.siemens.com/productcert/pdf/ssa-608355.pdf
- developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability
- lists.debian.org/debian-lts-announce/2018/07/msg00038.html
- lists.debian.org/debian-lts-announce/2018/09/msg00017.html
- portal.msrc.microsoft.com/en-us/security-guidance/advisory/ADV180013
- psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0005
- security.netapp.com/advisory/ntap-20180521-0001/
- support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03850en_us
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180521-cpusidechannel
- usn.ubuntu.com/3756-1/
- www.debian.org/security/2018/dsa-4273
- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00115.html
- www.kb.cert.org/vuls/id/180049
- www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-18-0006
Vendor advisories and official records. Exploit/PoC links are deliberately left out.