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CVE-2023-43585· NVD / CVE Program· CNA Zoom

Improper access control in Zoom Mobile App for iOS and Zoom SDKs for iOS before version 5.16.5 may allow an authenticated user to conduct a

Noroxi assessment

Priority: Monitor (action score 26/100)

  • 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: 0.59% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

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 Zoom Mobile App for iOS and Zoom SDKs for iOS before version 5.16.5 may allow an authenticated user to conduct a disclosure of information via network access.

MediumCVSS 6.5 · v3.1—No exploit No fix recorded
Published
Dec 13, 2023
Updated
Jun 17, 2026
EPSS
0.5% · 47th percentile

Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CNA vs NVD score

NVD
6.5
CNA · Zoom
7.1
0.6 point gap

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

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
  • No fixed version yet

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

Follow CVE-2023-43585

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
zoommeeting software development kit
zoomvideo software development kit
zoomzoom

Affected versions

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

  • zoom meeting software development kitbefore 5.16.0
  • zoom meeting software development kitbefore 5.16.5
  • zoom video software development kitbefore 5.16.5
  • zoom zoombefore 5.16.5

Versions reported by the vendor

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

  • Zoom Video Communications, Inc. Zoom Mobile App for iOS and SDKs for iOS

    • before 5.16.0affected

Same product

zoom: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-24691Zoom Desktop Client for Windows, Zoom VDI Client for Windows, and Zoom Meeting SDK for Windows - Improper Input Validation
    40Plan
  • CVE-2025-62484Zoom Workplace Clients - Inefficient Regular Expression Complexity
    39Monitor
  • CVE-2025-64741Zoom Workplace for Android - Improper Authorization Handling
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2023-39215Sep 12, 2023 · Improper authentication in Zoom clients may allow an authenticated user to conduct a denial of service via network access.
    26Monitor
  • ← EarlierCVE-2023-43583Dec 13, 2023 · Cryptographic issues Zoom Mobile App for Android, Zoom Mobile App for iOS, and Zoom SDKs for Android and iOS before version 5.16.0 may allow
    19Monitor
  • Later →CVE-2023-43586Dec 13, 2023 · Path traversal in Zoom Desktop Client for Windows, Zoom VDI Client for Windows, and Zoom SDKs for Windows may allow an authenticated user to
    35Monitor

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

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.

  • CVE-2023-3921592 days apartImproper authentication in Zoom clients may allow an authenticated user to conduct a denial of service via network access.
    26Monitor
  • CVE-2024-2469862 days apartZoom Clients - Improper Authentication
    17Monitor

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

  • Anyone who can reach it over the internet 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
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-449 · The UI Performs the Wrong Action

CVSS vector

CVSS:3.1/AV:N/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.

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

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