Is CVE-2011-1956 in the CISA KEV catalog?

No. CVE-2011-1956 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-1956?

CVE-2011-1956 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2011-1956?

CVE-2011-1956 has an EPSS score of 5.85% (92th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-1956?

Upgrade wireshark on debian 11 to 1.4.6-1 or later.

CVE & CISA-KEV Catalog

CVE-2011-1956

MEDIUMEPSS 92th pctl

4.3

CVSS v2

NVD

Description

The bytes_repr_len function in Wireshark 1.4.5 uses an incorrect pointer argument, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via arbitrary TCP traffic.

How to fix

Remediation Available

wiresharkDebian

Fixed in:1.4.6-1CVE-2011-1956

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

5.85%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% of all known CVEs.

References

Patch2

Exploit3

Other references3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.