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CVE-2023-21715· NVD / CVE Program· CNA microsoft

Microsoft Publisher Security Feature Bypass Vulnerability

HighCVSS 7.3 · v3.1KEVWeaponized No fix recorded
Published
Feb 14, 2023
Updated
Aug 19, 2026
EPSS
12.0% · 96th percentile
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Action score

63

This week

Don’t wait for the next maintenance window.

CVSS
29 / 40 · 7.3 / 10
CISA KEV
30 / 30 · Listed
EPSS
4 / 30 · 12.0%

CISA SSVC decision

Exploitation
active
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.3
CNA · microsoft
7.3
agree

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

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

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Feb 14, 2023. That signals real attacks, not theory.

Remediation deadline for government agencies: Mar 7, 2023.

Affected systems

VendorProduct
microsoft365 apps

Affected versions

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

  • microsoft 365 appsall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.

  • Microsoft Microsoft 365 Apps for Enterprise

    • 16.0.1 and later · before https://aka.ms/OfficeSecurityReleasesaffected

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-23397Microsoft Outlook Elevation of Privilege VulnerabilityKEV
    98Now
  • CVE-2024-21413Microsoft Outlook Remote Code Execution VulnerabilityKEV
    97Now
  • CVE-2026-21509Microsoft Office Security Feature Bypass VulnerabilityKEV
    82Now
  • CVE-2021-42292Microsoft Excel Security Feature Bypass VulnerabilityKEV
    74This week
  • CVE-2023-35311Microsoft Outlook Security Feature Bypass VulnerabilityKEV
    70This week
  • CVE-2024-38189Microsoft Project Remote Code Execution VulnerabilityKEV
    67This week

Remediation

Which version to upgrade to

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

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

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.

  1. CISA KEV-1 d
  2. Published
  3. TodaySep 29, 2026+1323 d
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

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-863 · Incorrect Authorization

CVSS vector

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

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.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

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 help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

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

All records