Wireshark Foundation

CVE	Summary	Severity	CVSS	EPSS	Priority
CVE-2026-76886	Denial of service in Wireshark's C12.22 protocol dissector affects versions 4.6.0-4.6.7 and 4.4.0-4.4.17, where a malformed C12.22 packet triggers a heap buffer overflow (CWE-122) that crashes the application. An attacker who can get crafted traffic in front of a capturing or file-loading analyst can reliably terminate the dissection session. A proof-of-concept is reported via SSVC, but there is no evidence of active exploitation, and the EPSS probability is low (0.27%).	CRITICAL	9.8	0.3%	49
CVE-2026-76879	Wireshark's C12.22 protocol dissector crashes via a stack-based buffer overflow when processing malformed C12.22 packets, enabling unauthenticated remote denial of service against versions 4.4.0-4.4.18 and 4.6.0-4.6.7. An attacker who can inject crafted C12.22 traffic into a live capture session - or supply a malicious PCAP file - can crash the analyzer process, blinding the analyst to network activity. No public exploit or CISA KEV listing has been identified at time of analysis; EPSS data was not provided in available intelligence.	HIGH	7.5	0.3%	38
CVE-2026-76880	Wireshark's RRC protocol dissector crashes due to an out-of-bounds write (CWE-787) in versions 4.6.0-4.6.7 and 4.4.0-4.4.18, enabling denial of service against any instance actively capturing or replaying Radio Resource Control (LTE/5G) traffic. The CVSS:3.1 AV:N/AC:L/PR:N/UI:N vector confirms an unauthenticated network-adjacent attacker can trigger the crash by injecting a malformed RRC packet into a monitored segment. No public exploit code has been identified at time of analysis, and impact is strictly availability - no confidentiality or integrity loss.	HIGH	7.5	0.3%	38
CVE-2026-76919	Denial of service in the Wireshark ESS protocol dissector affects versions 4.6.0-4.6.7 and 4.4.0-4.4.17, allowing a remote unauthenticated attacker to crash Wireshark by injecting crafted packets into a network segment under active capture. The root cause is CWE-457 (use of an uninitialized variable) in the ESS dissector, which triggers an unhandled crash on malformed ESS traffic. No CISA KEV listing or public exploit has been identified; an EPSS score of 0.25% (16th percentile) and SSVC exploitation status of 'none' collectively indicate low real-world exploitation likelihood despite the high CVSS base score.	HIGH	7.5	0.2%	38
CVE-2026-76885	Wireshark's Tektronix K12xx file parser crashes when processing a malformed capture file, causing a denial of service in versions 4.6.0-4.6.7 and 4.4.0-4.4.18. Rooted in CWE-126 (Buffer Over-read), the flaw allows an attacker to terminate Wireshark on a victim's system by inducing them to open a specially crafted K12xx-format file. No public exploit code and no active exploitation (CISA KEV) have been identified; the low CVSS score of 3.1 reflects the crash-only impact and mandatory user interaction.	MEDIUM	6.5	0.2%	33
CVE-2026-76890	Denial of service via a crash in sharkd, the Wireshark daemon component, affects the Wireshark Foundation's Wireshark versions 4.6.0-4.6.7 and 4.4.0-4.4.18. The root cause is CWE-825 (Expired Pointer Dereference), where a crafted network request or packet capture can trigger use of an expired pointer, crashing the sharkd process and producing a denial of service. No public exploit code has been identified at time of analysis and this vulnerability is not listed in CISA's KEV catalog; with a CVSS base score of 3.1, it represents low severity bounded by high attack complexity and a required user interaction.	MEDIUM	6.5	0.2%	33
CVE-2026-76891	Denial of service via crash in sharkd, Wireshark's daemon-mode component, affects versions 4.6.0-4.6.7 and 4.4.0-4.4.18. An unauthenticated remote attacker with high-complexity exploitation conditions and required user interaction can cause sharkd to crash by submitting crafted input, resulting in limited availability impact. No public exploit code and no CISA KEV listing have been identified at time of analysis; the low CVSS score of 3.1 reflects the constrained attack conditions.	MEDIUM	6.5	0.2%	33
CVE-2026-76884	The ERF file parser in Wireshark crashes on malformed input, enabling denial of service against analyst workstations running versions 4.4.0 through 4.4.17 and 4.6.0 through 4.6.7. Exploitation requires that a user open a specially crafted ERF capture file, and the CVSS vector (AV:N/AC:H/UI:R/A:L) reflects both the user-interaction dependency and the limited scope of impact - a crash of the Wireshark process only. No public exploit has been identified at time of analysis, and CISA KEV does not list this CVE.	MEDIUM	6.5	0.2%	33
CVE-2026-76887	Wireshark's dissection engine in versions 4.4.0-4.4.17 and 4.6.0-4.6.7 contains a heap-based buffer overflow (CWE-122) that crashes the application when processing a specially crafted malformed packet, yielding a denial-of-service outcome. Exploitation requires that an analyst actively opens a malicious capture file or performs live capture of adversary-controlled traffic, making this a user-interaction-dependent, high-complexity flaw with no code execution potential. No active exploitation has been confirmed by CISA KEV, no public proof-of-concept has been identified, and the CVSS 3.1 base score of 3.1 (Low) accurately reflects the constrained real-world impact.	MEDIUM	6.5	0.2%	33
CVE-2026-76921	Wireshark's CMS (Cryptographic Message Syntax) protocol dissector crashes due to a use-after-free (CWE-416) condition when processing malformed CMS packet data, affecting versions 4.6.0-4.6.7 and 4.4.0-4.4.18 and resulting in denial of service. The CVSS vector (AV:L/UI:R) confirms exploitation requires a user to open a specially crafted capture file or analyze malicious live traffic, limiting remote risk. No public exploit code or CISA KEV listing is identified at time of analysis, making this a realistic but not critical-priority issue outside environments where analysts regularly open untrusted capture files.	MEDIUM	5.5	0.1%	28
CVE-2026-19696	Wireshark 4.6.0 through 4.6.7 on Windows crashes when parsing malformed Ixia IxVeriWave capture files or Vector Informatik BLF files, resulting in denial of service via an out-of-bounds write (CWE-787). The vulnerability requires a user to open a crafted file, making it a user-assisted local attack. No public exploit code or active exploitation has been identified at time of analysis.	MEDIUM	5.5	0.1%	28
CVE-2026-76924	Wireshark's Kerberos protocol dissector in versions 4.4.0-4.4.18 and 4.6.0-4.6.7 contains an out-of-bounds read (CWE-125) that crashes the application when parsing a maliciously crafted packet capture file, causing denial of service. Exploitation requires a local user to actively open the crafted file, making this a user-interaction-dependent, local-vector attack with no confidentiality or integrity impact. No public exploit code or active exploitation has been identified at time of analysis.	MEDIUM	5.5	0.1%	28
CVE-2026-76917	Heap-based buffer overflow in Wireshark's Bluetooth AVRCP protocol dissector crashes the application when processing malformed AVRCP packets, enabling denial of service against versions 4.6.0-4.6.7 and 4.4.0-4.4.18. The CVSS vector (AV:L/UI:R) indicates the attack requires a user to open or process a crafted packet capture file - this is not a remotely triggerable crash but a file-based DoS vector typical of Wireshark dissector flaws. No public exploit code has been identified and the vulnerability is not listed in the CISA KEV catalog at time of analysis.	MEDIUM	5.5	0.1%	28
CVE-2026-76918	Heap-based buffer overflow in Wireshark's SSH protocol dissector affects versions 4.6.0-4.6.7 and 4.4.0-4.4.18, crashing the application and causing denial of service. An attacker delivers a crafted network capture file or malformed live SSH traffic; when a user opens or captures it with an affected Wireshark build, the dissector overflows a heap buffer and terminates the process. No public exploit code has been identified at time of analysis, and this vulnerability is not listed in the CISA KEV catalog.	MEDIUM	5.5	0.1%	28
CVE-2026-76922	Wireshark's Bluetooth BR/EDR FHS protocol dissector crashes via a NULL pointer dereference (CWE-476) when processing a malformed packet capture, affecting the 4.6.x branch (4.6.0-4.6.7) and the 4.4.x branch (4.4.0-4.4.18). An attacker who can persuade a user to open a specially crafted capture file can crash the Wireshark process, resulting in an application-level denial of service with no confidentiality or integrity impact. No public exploit code has been identified and this CVE does not appear in the CISA KEV catalog; EPSS data was not included in the available intelligence.	MEDIUM	5.5	0.1%	28

CVE-2026-76886

Denial of service in Wireshark's C12.22 protocol dissector affects versions 4.6.0-4.6.7 and 4.4.0-4.4.17, where a malformed C12.22 packet triggers a heap buffer overflow (CWE-122) that crashes the application. An attacker who can get crafted traffic in front of a capturing or file-loading analyst can reliably terminate the dissection session. A proof-of-concept is reported via SSVC, but there is no evidence of active exploitation, and the EPSS probability is low (0.27%).

CRITICAL

9.8

0.3%

49

CVE-2026-76879

Wireshark's C12.22 protocol dissector crashes via a stack-based buffer overflow when processing malformed C12.22 packets, enabling unauthenticated remote denial of service against versions 4.4.0-4.4.18 and 4.6.0-4.6.7. An attacker who can inject crafted C12.22 traffic into a live capture session - or supply a malicious PCAP file - can crash the analyzer process, blinding the analyst to network activity. No public exploit or CISA KEV listing has been identified at time of analysis; EPSS data was not provided in available intelligence.

HIGH

7.5

0.3%

38

CVE-2026-76880

Wireshark's RRC protocol dissector crashes due to an out-of-bounds write (CWE-787) in versions 4.6.0-4.6.7 and 4.4.0-4.4.18, enabling denial of service against any instance actively capturing or replaying Radio Resource Control (LTE/5G) traffic. The CVSS:3.1 AV:N/AC:L/PR:N/UI:N vector confirms an unauthenticated network-adjacent attacker can trigger the crash by injecting a malformed RRC packet into a monitored segment. No public exploit code has been identified at time of analysis, and impact is strictly availability - no confidentiality or integrity loss.

HIGH

7.5

0.3%

38

CVE-2026-76919

Denial of service in the Wireshark ESS protocol dissector affects versions 4.6.0-4.6.7 and 4.4.0-4.4.17, allowing a remote unauthenticated attacker to crash Wireshark by injecting crafted packets into a network segment under active capture. The root cause is CWE-457 (use of an uninitialized variable) in the ESS dissector, which triggers an unhandled crash on malformed ESS traffic. No CISA KEV listing or public exploit has been identified; an EPSS score of 0.25% (16th percentile) and SSVC exploitation status of 'none' collectively indicate low real-world exploitation likelihood despite the high CVSS base score.

HIGH

7.5

0.2%

38

CVE-2026-76885

Wireshark's Tektronix K12xx file parser crashes when processing a malformed capture file, causing a denial of service in versions 4.6.0-4.6.7 and 4.4.0-4.4.18. Rooted in CWE-126 (Buffer Over-read), the flaw allows an attacker to terminate Wireshark on a victim's system by inducing them to open a specially crafted K12xx-format file. No public exploit code and no active exploitation (CISA KEV) have been identified; the low CVSS score of 3.1 reflects the crash-only impact and mandatory user interaction.

MEDIUM

6.5

0.2%

33

CVE-2026-76890

Denial of service via a crash in sharkd, the Wireshark daemon component, affects the Wireshark Foundation's Wireshark versions 4.6.0-4.6.7 and 4.4.0-4.4.18. The root cause is CWE-825 (Expired Pointer Dereference), where a crafted network request or packet capture can trigger use of an expired pointer, crashing the sharkd process and producing a denial of service. No public exploit code has been identified at time of analysis and this vulnerability is not listed in CISA's KEV catalog; with a CVSS base score of 3.1, it represents low severity bounded by high attack complexity and a required user interaction.

MEDIUM

6.5

0.2%

33

CVE-2026-76891

Denial of service via crash in sharkd, Wireshark's daemon-mode component, affects versions 4.6.0-4.6.7 and 4.4.0-4.4.18. An unauthenticated remote attacker with high-complexity exploitation conditions and required user interaction can cause sharkd to crash by submitting crafted input, resulting in limited availability impact. No public exploit code and no CISA KEV listing have been identified at time of analysis; the low CVSS score of 3.1 reflects the constrained attack conditions.

MEDIUM

6.5

0.2%

33

CVE-2026-76884

The ERF file parser in Wireshark crashes on malformed input, enabling denial of service against analyst workstations running versions 4.4.0 through 4.4.17 and 4.6.0 through 4.6.7. Exploitation requires that a user open a specially crafted ERF capture file, and the CVSS vector (AV:N/AC:H/UI:R/A:L) reflects both the user-interaction dependency and the limited scope of impact - a crash of the Wireshark process only. No public exploit has been identified at time of analysis, and CISA KEV does not list this CVE.

MEDIUM

6.5

0.2%

33

CVE-2026-76887

Wireshark's dissection engine in versions 4.4.0-4.4.17 and 4.6.0-4.6.7 contains a heap-based buffer overflow (CWE-122) that crashes the application when processing a specially crafted malformed packet, yielding a denial-of-service outcome. Exploitation requires that an analyst actively opens a malicious capture file or performs live capture of adversary-controlled traffic, making this a user-interaction-dependent, high-complexity flaw with no code execution potential. No active exploitation has been confirmed by CISA KEV, no public proof-of-concept has been identified, and the CVSS 3.1 base score of 3.1 (Low) accurately reflects the constrained real-world impact.

MEDIUM

6.5

0.2%

33

CVE-2026-76921

Wireshark's CMS (Cryptographic Message Syntax) protocol dissector crashes due to a use-after-free (CWE-416) condition when processing malformed CMS packet data, affecting versions 4.6.0-4.6.7 and 4.4.0-4.4.18 and resulting in denial of service. The CVSS vector (AV:L/UI:R) confirms exploitation requires a user to open a specially crafted capture file or analyze malicious live traffic, limiting remote risk. No public exploit code or CISA KEV listing is identified at time of analysis, making this a realistic but not critical-priority issue outside environments where analysts regularly open untrusted capture files.

MEDIUM

5.5

0.1%

28

CVE-2026-19696

Wireshark 4.6.0 through 4.6.7 on Windows crashes when parsing malformed Ixia IxVeriWave capture files or Vector Informatik BLF files, resulting in denial of service via an out-of-bounds write (CWE-787). The vulnerability requires a user to open a crafted file, making it a user-assisted local attack. No public exploit code or active exploitation has been identified at time of analysis.

MEDIUM

5.5

0.1%

28

CVE-2026-76924

Wireshark's Kerberos protocol dissector in versions 4.4.0-4.4.18 and 4.6.0-4.6.7 contains an out-of-bounds read (CWE-125) that crashes the application when parsing a maliciously crafted packet capture file, causing denial of service. Exploitation requires a local user to actively open the crafted file, making this a user-interaction-dependent, local-vector attack with no confidentiality or integrity impact. No public exploit code or active exploitation has been identified at time of analysis.

MEDIUM

5.5

0.1%

28

CVE-2026-76917

Heap-based buffer overflow in Wireshark's Bluetooth AVRCP protocol dissector crashes the application when processing malformed AVRCP packets, enabling denial of service against versions 4.6.0-4.6.7 and 4.4.0-4.4.18. The CVSS vector (AV:L/UI:R) indicates the attack requires a user to open or process a crafted packet capture file - this is not a remotely triggerable crash but a file-based DoS vector typical of Wireshark dissector flaws. No public exploit code has been identified and the vulnerability is not listed in the CISA KEV catalog at time of analysis.

MEDIUM

5.5

0.1%

28

CVE-2026-76918

Heap-based buffer overflow in Wireshark's SSH protocol dissector affects versions 4.6.0-4.6.7 and 4.4.0-4.4.18, crashing the application and causing denial of service. An attacker delivers a crafted network capture file or malformed live SSH traffic; when a user opens or captures it with an affected Wireshark build, the dissector overflows a heap buffer and terminates the process. No public exploit code has been identified at time of analysis, and this vulnerability is not listed in the CISA KEV catalog.

MEDIUM

5.5

0.1%

28

CVE-2026-76922

Wireshark's Bluetooth BR/EDR FHS protocol dissector crashes via a NULL pointer dereference (CWE-476) when processing a malformed packet capture, affecting the 4.6.x branch (4.6.0-4.6.7) and the 4.4.x branch (4.4.0-4.4.18). An attacker who can persuade a user to open a specially crafted capture file can crash the Wireshark process, resulting in an application-level denial of service with no confidentiality or integrity impact. No public exploit code has been identified and this CVE does not appear in the CISA KEV catalog; EPSS data was not included in the available intelligence.

MEDIUM

5.5

0.1%

28

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