Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior mem
Noroxi assessment
Priority: Plan (action score 40/100)
- Public proof-of-concept code exists (Exploit-DB, GitHub); there is no record of exploitation in the wild.
- Probability of exploitation in the next 30 days: 60.6% (FIRST EPSS); higher than 99.1% of all records.
- Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: xen (Alpine:v3.10) 4.11.0-r0; xen (Alpine:v3.5) 4.7.6-r0; xen (Alpine:v3.6) 4.8.4-r0.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Add it to your regular patch cycle. Upgrade to xen (Alpine:v3.10) 4.11.0-r0; xen (Alpine:v3.5) 4.7.6-r0; xen (Alpine:v3.6) 4.8.4-r0 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4.
- BDU:2019-00768
- DLA-1446-1
- DLA-1731-1
- DSA-4210-1
- DSA-4273-1
- DSA-4273-2
- openSUSE-SU-2019:1438-1
- openSUSE-SU-2020:1325-1
- openSUSE-SU-2024:11008-1
- RHSA-2018:1629
- RHSA-2018:1630
- RHSA-2018:1632
- RHSA-2018:1633
- RHSA-2018:1635
- RHSA-2018:1636
- RHSA-2018:1637
- RHSA-2018:1638
- RHSA-2018:1639
- RHSA-2018:1640
- RHSA-2018:1641
- Published
- May 22, 2018
- Updated
- Jun 16, 2026
- EPSS
- 60.6% · 99th percentile
- CWE
- CWE-203
Report tools
Action score
40
Plan
Add it to your regular patch cycle.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 18 / 30 · 60.6%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Proof of concept exists, no weaponized module
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| 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 x5-e3930 | cpe:2.3:h:intel:atom_x5-e3930 |
| intel | atom x5-e3940 | cpe:2.3:h:intel:atom_x5-e3940 |
| intel | atom x7-e3950 | cpe:2.3:h:intel:atom_x7-e3950 |
| 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 |
and 188 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- microsoft windows server 2008r2
- microsoft windows server 2008sp2
- microsoft windows server 2012all versions
- microsoft windows server 2012r2
- microsoft windows server 2016all versions
- microsoft windows server 20161709
- microsoft windows server 20161803
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 |
|---|---|---|---|
| Alpine:v3.10 | xen | before 4.11.0-r0 | 4.11.0-r0 |
| Alpine:v3.5 | xen | before 4.7.6-r0 | 4.7.6-r0 |
| Alpine:v3.6 | xen | before 4.8.4-r0 | 4.8.4-r0 |
| Alpine:v3.7 | xen | before 4.9.2-r3 | 4.9.2-r3 |
| Alpine:v3.8 | xen | before 4.10.1-r3 | 4.10.1-r3 |
| Debian:12 | arm-trusted-firmware | all versions | — |
| Debian:12 | intel-microcode | before 3.20180703.1 | 3.20180703.1 |
| Debian:12 | linux | before 4.16.12-1 | 4.16.12-1 |
| Debian:12 | xen | before 4.8.3+xsa262+shim4.10.0+comet3-1+deb9u7 | 4.8.3+xsa262+shim4.10.0+comet3-1+deb9u7 |
| Debian:14 | arm-trusted-firmware | before 2.12.16+dfsg-1 | 2.12.16+dfsg-1 |
| Debian:8 | intel-microcode | before 3.20180703.2~deb8u1 | 3.20180703.2~deb8u1 |
| Debian:8 | linux | before 3.16.64-1 | 3.16.64-1 |
| Debian:9 | intel-microcode | before 3.20180807a.1~deb9u1 | 3.20180807a.1~deb9u1 |
| Debian:9 | intel-microcode | before 3.20180703.2~deb9u1 | 3.20180703.2~deb9u1 |
| openSUSE:Leap 15.0 | java-1_8_0-openjdk | before 1.8.0.212-lp150.2.16.1 | 1.8.0.212-lp150.2.16.1 |
| openSUSE:Leap 15.1 | kernel-debug | before 4.12.14-lp151.28.63.1 | 4.12.14-lp151.28.63.1 |
| openSUSE:Leap 15.1 | kernel-default | before 4.12.14-lp151.28.63.1 | 4.12.14-lp151.28.63.1 |
| openSUSE:Leap 15.1 | kernel-docs | before 4.12.14-lp151.28.63.1 | 4.12.14-lp151.28.63.1 |
| openSUSE:Leap 15.1 | kernel-kvmsmall | before 4.12.14-lp151.28.63.1 | 4.12.14-lp151.28.63.1 |
| openSUSE:Leap 15.1 | kernel-obs-build | before 4.12.14-lp151.28.63.1 | 4.12.14-lp151.28.63.1 |
| openSUSE:Leap 15.1 | kernel-obs-qa | before 4.12.14-lp151.28.63.1 | 4.12.14-lp151.28.63.1 |
| openSUSE:Leap 15.1 | kernel-source | before 4.12.14-lp151.28.63.1 | 4.12.14-lp151.28.63.1 |
| openSUSE:Leap 15.1 | kernel-syms | before 4.12.14-lp151.28.63.1 | 4.12.14-lp151.28.63.1 |
| openSUSE:Leap 15.1 | kernel-vanilla | before 4.12.14-lp151.28.63.1 | 4.12.14-lp151.28.63.1 |
+96
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-2018-3693Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an at25Monitor
- CVE-2018-3640Systems with microprocessors utilizing speculative execution and that perform speculative reads of system registers may allow unauthorized d24Monitor
- 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 |
|---|---|---|
| alpine:xen | 4.11.0-r0 · Alpine:v3.10 | Package registry (OSV) |
| debian:arm-trusted-firmware | 2.12.16+dfsg-1 · Debian:14 | Package registry (OSV) |
| debian:intel-microcode | 3.20180703.1 · Debian:12 | Package registry (OSV) |
| debian:linux | 4.16.12-1 · Debian:12 | Package registry (OSV) |
| debian:xen | 4.8.3+xsa262+shim4.10.0+comet3-1+deb9u7 · Debian:12 | Package registry (OSV) |
| opensuse:java-1_8_0-openjdk | 1.8.0.212-lp150.2.16.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| opensuse:kernel-debug | 4.12.14-lp151.28.63.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-default | 4.12.14-lp151.28.63.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-docs | 4.12.14-lp151.28.63.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-kvmsmall | 4.12.14-lp151.28.63.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-obs-build | 4.12.14-lp151.28.63.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-obs-qa | 4.12.14-lp151.28.63.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-source | 4.12.14-lp151.28.63.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-syms | 4.12.14-lp151.28.63.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-vanilla | 4.12.14-lp151.28.63.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:libvirt | 7.7.0-2.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:kernel | 0:3.10.0-862.3.2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-abi-whitelists | 0:3.10.0-862.3.2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debug | 0:3.10.0-862.3.2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:3.10.0-862.3.2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debug-devel | 0:3.10.0-862.3.2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debuginfo | 0:3.10.0-862.3.2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debuginfo-common-x86_64 | 0:3.10.0-862.3.2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-devel | 0:3.10.0-862.3.2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-doc | 0:3.10.0-862.3.2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-headers | 0:3.10.0-862.3.2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-tools | 0:3.10.0-862.3.2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-tools-debuginfo | 0:3.10.0-862.3.2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| suse:kernel-bigmem | 3.0.101-108.48.1 · SUSE:Linux Enterprise Server 11 SP4 | Package registry (OSV) |
| suse:kernel-default | 4.4.131-94.29.1 · SUSE:Linux Enterprise Desktop 12 SP3 | Package registry (OSV) |
+10
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Exploit-DB entry ×1
- Proof-of-concept repository on GitHub ×4
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | dos | 2018-05-22 |
| Proof-of-concept repository on GitHub | stars:9 | 2018-05-31 |
| Proof-of-concept repository on GitHub | stars:0 | 2018-06-19 |
| Proof-of-concept repository on GitHub | stars:15 | 2019-05-11 |
| Proof-of-concept repository on GitHub | stars:1 | 2019-06-26 |
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.
- First PoCsame day
- Published
- TodayOct 13, 2026+3066 d
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
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-20-602 · Aug 12, 2020(Huawei Ürünleri için Güvenlik Güncellemesi Yayınladı)
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.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-203 · Observable DiscrepancyCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (19 more)Show less
- lists.opensuse.org/opensuse-security-announce/2019-05/msg00058.html
- lists.opensuse.org/opensuse-security-announce/2019-05/msg00059.html
- lists.opensuse.org/opensuse-security-announce/2020-09/msg00007.html
- support.lenovo.com/us/en/solutions/LEN-22133
- www.fujitsu.com/global/support/products/software/security/products-f/cve-2018-3639e.html
- www.openwall.com/lists/oss-security/2020/06/10/1
- www.openwall.com/lists/oss-security/2020/06/10/2
- www.openwall.com/lists/oss-security/2020/06/10/5
- www.securityfocus.com/bid/104232
- www.securitytracker.com/id/1040949
- www.securitytracker.com/id/1042004
- xenbits.xen.org/xsa/advisory-263.html
- access.redhat.com/errata/RHSA-2018:1629
- access.redhat.com/errata/RHSA-2018:1630
- access.redhat.com/errata/RHSA-2018:1632
- access.redhat.com/errata/RHSA-2018:1633
- access.redhat.com/errata/RHSA-2018:1635
- access.redhat.com/errata/RHSA-2018:1636
- access.redhat.com/errata/RHSA-2018:1637
Vendor advisories and official records. Exploit/PoC links are deliberately left out.