Trending
CVE-2026-5403

CVE detail

CVE-2026-5403

SBC codec crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service and possible code execution

CVSS 7.8 · HighBuzz score 36.91 public exploit repository references

Buzz score

Why this CVE is surfacing

Buzz score total 36.9

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 17.9 · diversity 14.5 · KEV 0.0 · OTX 0.0 · PoC 4.5

Mention score

17.9

5 evidence mentions in the snapshot

Diversity score

14.5

5 sources across 2 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

4.5

1 repos · best confidence 0.90

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

5 source links · newest first

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5403.jsonsecurity.access.redhat.com
No excerpt available.
Vendor Advisorysecurity.access.redhat.comMay 1, 2026, 12:16 AM
https://bugzilla.redhat.com/show_bug.cgi?id=2464271bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comMay 1, 2026, 12:16 AM
https://access.redhat.com/security/cve/CVE-2026-5403access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMay 1, 2026, 12:16 AM
https://www.wireshark.org/security/wnpa-sec-2026-16.htmlwww.wireshark.org
No excerpt available.
Exploitwww.wireshark.orgMay 1, 2026, 12:16 AM
https://gitlab.com/wireshark/wireshark/-/issues/21103gitlab.com
No excerpt available.
Exploitgitlab.comMay 1, 2026, 12:16 AM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

1 repository references · best confidence 0.90 · max 0 stars

wireshark/wiresharkHigh confidence
gitlabNVD Exploit reference0 starsDiscovered Jul 15, 2026, 3:18 AM
NVD labels the source link as Exploit; this is not independent verification of the repository's code.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence

CVE-2026-5405
RDP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service and possible code execution
CVSS 7.8 · High
Public PoC observed7 mentions
CVE-2023-0667
Due to failure in validating the length provided by an attacker-crafted MSMMS packet, Wireshark version 4.0.5 and prior, in an unusual configuration, is susceptible to a heap-base…
CVSS 6.5 · Medium
CVE-2023-0666
Due to failure in validating the length provided by an attacker-crafted RTPS packet, Wireshark version 4.0.5 and prior, by default, is susceptible to a heap-based buffer overflow,…
CVSS 6.5 · Medium
CVE-2026-40691
In Unbound 1.9.0 up to and including 1.25.1, when a DNSCrypt query is received over TCP, the routine that encrypts the reply in place fails to bound the reply length against the d…
CVSS 7.5 · High
2 mentions
CVE-2026-15422
The illumos SCTP inbound path performs association lookup for INIT ACK chunks without adequately validating the address parameters carried in the chunk. Since this lookup runs dur…
CVSS 9.1 · Critical
3 mentions
CVE-2026-55130
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVSS 7.8 · High
5 mentions

External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2026-5403.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:a:wireshark:wiresharkSearch this product on Shodan

Exact CVE query

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vuln:CVE-2026-5403Search this CVE on Shodan

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Metadata

Canonical fields

NVD status

Modified

Published

May 1, 2026

Modified

Jul 15, 2026

Official record

Authoritative NVD record

CVSS vector

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

CWE IDs

Vendor classifications

How this vector reads

CVSS 3.1 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Local. The attacker needs local access to the vulnerable system.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Privileges Required (PR): None. The attacker needs no privileges on the vulnerable system.
User Interaction (UI): Required. Another user must take an action for exploitation to succeed.
Scope (S): Unchanged. Impacts remain within the vulnerable security authority.
Confidentiality Impact (C): High. There is a total or serious impact to this security property.
Integrity Impact (I): High. There is a total or serious impact to this security property.
Availability Impact (A): High. There is a total or serious impact to this security property.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses