How severe is CVE-2011-2174?

CVE-2011-2174 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2011-2174 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-2174?

CVE-2011-2174 primarily affects Wireshark. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-2174?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-2174 published?

CVE-2011-2174 was published on 2011-06-06 and last updated on 2026-06-16.

CVE-2011-2174

CVE-2011-2174 is a medium-severity vulnerability in Wireshark with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Wireshark
Published: 2011-06-06
Last modified: 2026-06-16

Description

Double free vulnerability in the tvb_uncompress function in epan/tvbuff.c in Wireshark 1.2.x before 1.2.17 and 1.4.x before 1.4.7 allows remote attackers to cause a denial of service (application crash) via a packet with malformed data that uses zlib compression.

Frequently asked questions

What is CVE-2011-2174?: Double free vulnerability in the tvb_uncompress function in epan/tvbuff.c in Wireshark 1.2.x before 1.2.17 and 1.4.x before 1.4.7 allows remote attackers to cause a denial of service (application crash) via a packet with malformed data that uses zlib compression.
How severe is CVE-2011-2174?: CVE-2011-2174 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2011-2174 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-2174?: CVE-2011-2174 primarily affects Wireshark. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-2174?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-2174 published?: CVE-2011-2174 was published on 2011-06-06 and last updated on 2026-06-16.

References

Affected products (25)

cpe:2.3:a:wireshark:wireshark:1.2:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.3:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.5:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.6:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.7:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.8:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.9:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.10:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.11:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.12:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.13:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.14:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.15:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.2.16:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.4.1:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.4.2:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.4.3:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.4.4:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.4.5:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.4.6:*:*:*:*:*:*:*

More vulnerabilities in Wireshark

CVE-2011-0444 — Critical (CVSS 10.0): Buffer 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…
CVE-2010-2995 — Critical (CVSS 10.0): The SigComp Universal Decompressor Virtual Machine (UDVM) in Wireshark 0.10.8 through 1.0.14 and 1.2.0 through 1.2.9…
CVE-2010-2994 — Critical (CVSS 10.0): Stack-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…
CVE-2009-1266 — Critical (CVSS 10.0): Unspecified vulnerability in Wireshark before 1.0.7 has unknown impact and attack vectors.
CVE-2009-1210 — Critical (CVSS 10.0): Format string vulnerability in the PROFINET/DCP (PN-DCP) dissector in Wireshark 1.0.6 and earlier allows remote…
CVE-2008-3146 — Critical (CVSS 10.0): Multiple buffer overflows in packet_ncp2222.inc in Wireshark (formerly Ethereal) 0.9.7 through 1.0.2 allow attackers to…

All CVEs affecting Wireshark →

Other CWE-399 (Resource Management Errors) vulnerabilities

CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

Browse all CWE-399 (Resource Management Errors) vulnerabilities →