How severe is CVE-2013-6338?

CVE-2013-6338 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2013-6338 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-6338?

CVE-2013-6338 primarily affects Wireshark. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-6338?

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

When was CVE-2013-6338 published?

CVE-2013-6338 was published on 2013-11-04 and last updated on 2026-06-17.

CVE-2013-6338

CVE-2013-6338 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Wireshark
Published: 2013-11-04
Last modified: 2026-06-17

Description

The dissect_sip_common function in epan/dissectors/packet-sip.c in the SIP dissector in Wireshark 1.8.x before 1.8.11 and 1.10.x before 1.10.3 does not properly initialize a data structure, which allows remote attackers to cause a denial of service (application crash) via a crafted packet.

Frequently asked questions

What is CVE-2013-6338?: The dissect_sip_common function in epan/dissectors/packet-sip.c in the SIP dissector in Wireshark 1.8.x before 1.8.11 and 1.10.x before 1.10.3 does not properly initialize a data structure, which allows remote attackers to cause a denial of service (application crash) via a crafted packet.
How severe is CVE-2013-6338?: CVE-2013-6338 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2013-6338 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-6338?: CVE-2013-6338 primarily affects Wireshark. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-6338?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-6338 published?: CVE-2013-6338 was published on 2013-11-04 and last updated on 2026-06-17.

References

Affected products (14)

cpe:2.3:a:wireshark:wireshark:1.8.0:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.8.1:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.8.2:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.8.3:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.8.4:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.8.5:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.8.6:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.8.7:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.8.8:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.8.9:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.8.10:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.10.0:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.10.1:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.10.2:*:*:*:*:*:*:*

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-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →