← Vulnerability feed

Vulnerability record · CVE-2011-1956 · published 6 June 2011

CVE-2011-1956: Wireshark vulnerability

Wireshark · Wireshark

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.

4.3 CVSS 2.0 Medium EPSS 5.9% · top 7.1%
4.3CVSS 2.0 base score
5.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
16References, 6 tagged exploit
16 Jun 2026Last modified by 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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://openwall.com/lists/oss-security/2011/05/31/19 Exploit
http://openwall.com/lists/oss-security/2011/06/01/9 Exploit
http://secunia.com/advisories/44449
http://www.wireshark.org/docs/relnotes/wireshark-1.4.6.html Patch
http://www.wireshark.org/news/20110418.html Patch
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5837 Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/67789
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14943
http://openwall.com/lists/oss-security/2011/05/31/19 Exploit
http://openwall.com/lists/oss-security/2011/06/01/9 Exploit
http://secunia.com/advisories/44449
http://www.wireshark.org/docs/relnotes/wireshark-1.4.6.html Patch
http://www.wireshark.org/news/20110418.html Patch
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5837 Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/67789
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14943

Track CVE-2011-1956 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2011-0444Wireshark memory buffer overflow vulnerabilityBuffer overflow in the MAC-LTE dissector (epan/dissectors/packet-mac-lte.c) in Wireshark 1.2.0 through 1.2.13 and 1.4.0 through 1.4.2 allows remote a…EPSS 7.2%10.0CVE-2010-2994Wireshark memory buffer overflow vulnerabilityStack-based buffer overflow in the ASN.1 BER dissector in Wireshark 0.10.13 through 1.0.14 and 1.2.0 through 1.2.9 has unknown impact and remote atta…EPSS 2.4%10.0CVE-2010-2995Wireshark vulnerabilityThe SigComp Universal Decompressor Virtual Machine (UDVM) in Wireshark 0.10.8 through 1.0.14 and 1.2.0 through 1.2.9 allows remote attackers to cause…EPSS 6.7%10.0CVE-2009-1266Wireshark vulnerabilityUnspecified vulnerability in Wireshark before 1.0.7 has unknown impact and attack vectors.EPSS 1.6%10.0CVE-2009-1210Wireshark vulnerabilityFormat string vulnerability in the PROFINET/DCP (PN-DCP) dissector in Wireshark 1.0.6 and earlier allows remote attackers to execute arbitrary code v…EPSS 15%10.0CVE-2008-3146Wireshark memory buffer overflow vulnerabilityMultiple buffer overflows in packet_ncp2222.inc in Wireshark (formerly Ethereal) 0.9.7 through 1.0.2 allow attackers to cause a denial of service (ap…EPSS 4.0%10.0CVE-2007-6112Wireshark memory buffer overflow vulnerabilityBuffer overflow in the PPP dissector Wireshark (formerly Ethereal) 0.99.6 allows remote attackers to cause a denial of service (crash) and possibly e…EPSS 6.2%10.0CVE-2007-6114Wireshark memory buffer overflow vulnerabilityMultiple buffer overflows in Wireshark (formerly Ethereal) 0.99.0 through 0.99.6 allow remote attackers to cause a denial of service (crash) and poss…EPSS 6.2%

Source: NIST National Vulnerability Database (record CVE-2011-1956), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.