How severe is CVE-2015-3809?

CVE-2015-3809 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2015-3809 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3809?

CVE-2015-3809 primarily affects Wireshark. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-3809?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-3809 published?

CVE-2015-3809 was published on 2015-05-26 and last updated on 2026-06-17.

CVE-2015-3809

CVE-2015-3809 is a high-severity vulnerability in Wireshark with a CVSS 2.0 base score of 7.8. 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-189.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: Wireshark
Published: 2015-05-26
Last modified: 2026-06-17

Description

The dissect_lbmr_pser function in epan/dissectors/packet-lbmr.c in the LBMR dissector in Wireshark 1.12.x before 1.12.5 does not properly track the current offset, which allows remote attackers to cause a denial of service (infinite loop) via a crafted packet.

Frequently asked questions

What is CVE-2015-3809?: The dissect_lbmr_pser function in epan/dissectors/packet-lbmr.c in the LBMR dissector in Wireshark 1.12.x before 1.12.5 does not properly track the current offset, which allows remote attackers to cause a denial of service (infinite loop) via a crafted packet.
How severe is CVE-2015-3809?: CVE-2015-3809 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2015-3809 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3809?: CVE-2015-3809 primarily affects Wireshark. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-3809?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-3809 published?: CVE-2015-3809 was published on 2015-05-26 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:wireshark:wireshark:1.12.0:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.12.1:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.12.2:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.12.3:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:1.12.4:*:*:*:*:*:*:*

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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…
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CVE-2015-3864 — Critical (CVSS 10.0): Integer underflow in the MPEG4Extractor::parseChunk function in MPEG4Extractor.cpp in libstagefright in mediaserver in…
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