CVE-2009-4377

4.3 MEDIUM 3% exploit odds Fix listed

What it is

The (1) SMB and (2) SMB2 dissectors in Wireshark 0.9.0 through 1.2.4 allow remote attackers to cause a denial of service (crash) via a crafted packet that triggers a NULL pointer dereference, as demonstrated by fuzz-2009-12-07-11141.pcap.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 2.7% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2009-12-21 21:30 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:13 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 2.7% in the next 30 days (EPSS).
Severity: 4.3 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2009-12-21 21:30 UTC
Last modified: 2026-06-16 23:13 UTC
Exploit probability: 2.7% · EPSS, next 30 days
Record status: Modified

Affected

Wireshark 0.9.2
Wireshark 0.9.5
Wireshark 0.9.6
Wireshark 0.9.7
Wireshark 0.9.8
Wireshark 0.9.10
Wireshark 0.9.14
Wireshark 0.99

Attack profile CVSS 2.0 · 4.3

Attack vector: Network
Complexity: Medium
Authentication: None
Confidentiality: None
Integrity: None
Availability: Partial

Raw vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2009-4377.md and follow it. Check whether this project is affected by CVE-2009-4377. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record