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CVE-2023-23908· NVD / CVE Program· CNA intel

Improper access control in some 3rd Generation Intel(R) Xeon(R) Scalable processors may allow a privileged user to potentially enable inform

Noroxi assessment

Priority: Monitor (action score 17/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.25% (FIRST EPSS).
  • Someone with local access to the system can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: intel-ucode (Alpine:v3.15) 20230808-r0; intel-microcode (Debian:10) 3.20230808.1~deb10u1; intel-microcode (Debian:11) 3.20230808.1~deb11u1.

Low priority for now. Upgrade to intel-ucode (Alpine:v3.15) 20230808-r0; intel-microcode (Debian:10) 3.20230808.1~deb10u1; intel-microcode (Debian:11) 3.20230808.1~deb11u1 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

Primary sources: NVD · CVE.org · FIRST EPSS

Improper access control in some 3rd Generation Intel(R) Xeon(R) Scalable processors may allow a privileged user to potentially enable information disclosure via local access.

MediumCVSS 4.4 · v3.1—No exploit Fix available
Published
Aug 10, 2023
Updated
Jun 17, 2026
EPSS
0.2% · 15th percentile

Report tools

JSON

Action score

17

Monitor

Low priority for now.

CVSS
17 / 40 · 4.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
4.4
CNA · intel
6.0
1.6 point gap

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-23908

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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.

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Affected 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.

VendorProduct
intelxeon d-1732te
intelxeon d-1726
intelmicrocode
intelxeon d-1513n
intelxeon d-1518
intelxeon d-1520
intelxeon d-1521
intelxeon d-1523n
intelxeon d-1527
intelxeon d-1528
intelxeon d-1529
intelxeon d-1531

and 188 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux10.0
  • debian debian linux11.0
  • debian debian linux12.0
  • fedoraproject fedora37
  • fedoraproject fedora38
  • intel microcodebefore 20230808
  • intel xeon d-1513n firmwareall versions
  • intel xeon d-1518 firmwareall versions
  • intel xeon d-1520 firmwareall versions
  • intel xeon d-1521 firmwareall versions
  • intel xeon d-1523n firmwareall versions
  • intel xeon d-1527 firmwareall versions
  • intel xeon d-1528 firmwareall versions
  • intel xeon d-1529 firmwareall versions
  • intel xeon d-1531 firmwareall versions
  • intel xeon d-1533n firmwareall versions
  • intel xeon d-1537 firmwareall versions
  • intel xeon d-1539 firmwareall versions
  • intel xeon d-1540 firmwareall versions
  • intel xeon d-1541 firmwareall versions

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.

  • n/a 3rd Generation Intel(R) Xeon(R) Scalable processors

    • See referencesaffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.15intel-ucodebefore 20230808-r020230808-r0
Debian:10intel-microcodebefore 3.20230808.1~deb10u13.20230808.1~deb10u1
Debian:11intel-microcodebefore 3.20230808.1~deb11u13.20230808.1~deb11u1
Debian:12intel-microcodebefore 3.20230808.1~deb12u13.20230808.1~deb12u1
Debian:13intel-microcodebefore 3.20230808.13.20230808.1
openSUSE:Tumbleweeducode-intelbefore 20230808-1.120230808-1.1
SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSSucode-intelbefore 20230808-150100.3.223.120230808-150100.3.223.1
SUSE:Linux Enterprise Micro 5.3ucode-intelbefore 20230808-150200.27.120230808-150200.27.1
SUSE:Linux Enterprise Micro 5.3ucode-intelbefore 20230808-150200.27.120230808-150200.27.1
SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREmicrocode_ctlbefore 1.17-102.83.81.11.17-102.83.81.1
SUSE:Linux Enterprise Server 12 SP2-BCLucode-intelbefore 20230808-13.110.120230808-13.110.1
SUSE:Linux Enterprise Server 12 SP5ucode-intelbefore 20230808-123.120230808-123.1

Same product

intel: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-40982Information exposure through microarchitectural state after transient execution in certain vector execution units for some Intel(R) Processo
    27Monitor
  • CVE-2020-24511Improper isolation of shared resources in some Intel(R) Processors may allow an authenticated user to potentially enable information disclos
    26Monitor
  • CVE-2020-8698Improper isolation of shared resources in some Intel(R) Processors may allow an authenticated user to potentially enable information disclos
    22Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2020-8696Nov 12, 2020 · Improper removal of sensitive information before storage or transfer in some Intel(R) Processors may allow an authenticated user to potentia
    22Monitor
  • ← EarlierCVE-2020-24512Jun 9, 2021 · Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via l
    13Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:intel-ucode20230808-r0 · Alpine:v3.15Package registry (OSV)
debian:intel-microcode3.20230808.1~deb12u1 · Debian:12Package registry (OSV)
opensuse:ucode-intel20230808-150200.27.1 · openSUSE:Leap Micro 5.3Package registry (OSV)
suse:microcode_ctl1.17-102.83.81.1 · SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREPackage registry (OSV)
suse:ucode-intel20230808-13.110.1 · SUSE:Linux Enterprise Server 12 SP2-BCLPackage registry (OSV)
suse:ucode-intel20230808-150200.27.1 · SUSE:Linux Enterprise Micro 5.3Package 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.

EPSS, last 120 days

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 researchers

Finders, 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.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • Administrator privileges are required.
  • 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
High
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-284 · Improper Access Control

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/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.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records