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17 vulnerabilities found for by The Tcpdump Group
CVE-2026-18238 (GCVE-0-2026-18238)
Vulnerability from cvelistv5
Published
2026-09-05 18:51
Modified
2026-09-08 15:17
Severity ?
VLAI Severity ?
EPSS score ?
Summary
The rpcap client code that processes a RPCAP_MSG_PACKET message received from the server incorrectly validates its headers. A malicious server can send a crafted message and cause the client to treat up to 20 bytes of the client process memory beyond the end of the buffer as if it was a part of the captured packet.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | libpcap |
Version: 1.8.x Version: 1.9.x Version: 1.10.x ≤ |
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CVE-2026-18313 (GCVE-0-2026-18313)
Vulnerability from cvelistv5
Published
2026-09-05 18:51
Modified
2026-09-08 15:16
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Summary
rpcapd can allocate up to 65536 bytes per each RPCAP_MSG_UPDATEFILTER_REQ or RPCAP_MSG_STARTCAP_REQ message received from the client, but it never frees the memory, so it leaks memory even under normal use. A malicious client can cause the server to leak memory substantially faster.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | libpcap |
Version: 1.9.x Version: 1.10.x ≤ |
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CVE-2026-6554 (GCVE-0-2026-6554)
Vulnerability from cvelistv5
Published
2026-09-05 18:51
Modified
2026-10-22 20:08
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Summary
libpcap BPF interpreter treats the offset in the 'ja L' BPF instruction as a signed integer to implement looping via backward jumps, but it does not limit the number of loop iterations. A crafted filter program or the 'protochain' primitive used on a crafted network packet can cause the interpreter to loop infinitely.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | libpcap |
Version: 0 ≤ |
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CVE-2026-6244 (GCVE-0-2026-6244)
Vulnerability from cvelistv5
Published
2026-09-05 18:50
Modified
2026-09-17 07:35
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-369 - Divide By Zero
Summary
libpcap BPF interpreter for the 'div #k' and 'mod #k' ALU instructions does not check whether the immediate value is zero. In particular uncommon use cases a crafted filter program can cause a division by zero.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | libpcap |
Version: 0 ≤ |
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CVE-2026-31911 (GCVE-0-2026-31911)
Vulnerability from cvelistv5
Published
2026-09-05 18:50
Modified
2026-09-08 15:13
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-617 - Reachable Assertion
Summary
libpcap BPF interpreter calls abort() if it encounters a BPF instruction that has an invalid opcode. In particular uncommon use cases a crafted filter program can terminate the OS process.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | libpcap |
Version: 0 ≤ |
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CVE-2026-31912 (GCVE-0-2026-31912)
Vulnerability from cvelistv5
Published
2026-09-05 18:49
Modified
2026-09-08 18:21
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
libpcap BPF interpreter detects neither reaching the end of the filter program buffer due to lack of a return instruction nor executing a jump instruction with an offset that translates to a pointer outside of the buffer. In particular uncommon use cases a crafted filter program can cause the interpreter to try reading the OS process memory in the 32GiB around the buffer on 64-bit architectures and in the entire address space on 32-bit architectures.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | libpcap |
Version: 0 ≤ |
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CVE-2026-0799 (GCVE-0-2026-0799)
Vulnerability from cvelistv5
Published
2026-09-05 18:48
Modified
2026-09-08 18:20
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
In BPF instructions that load/store a value from/to a scratch memory register the register index is an unsigned 32-bit integer and must not exceed 15, but libpcap BPF interpreter does not validate the value. In particular uncommon use cases a crafted filter program can cause the interpreter to try reading and writing the OS process memory in the 16GiB starting at the current stack frame on 64-bit architectures and in the entire address space on 32-bit architectures.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | libpcap |
Version: 0 ≤ |
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CVE-2025-11964 (GCVE-0-2025-11964)
Vulnerability from cvelistv5
Published
2025-12-31 00:58
Modified
2026-01-02 14:38
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-787 - Out-of-bounds Write
Summary
On Windows only, if libpcap needs to convert a Windows error message to UTF-8 and the message includes characters that UTF-8 represents using 4 bytes, utf_16le_to_utf_8_truncated() can write data beyond the end of the provided buffer.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | libpcap |
Version: 1.10.0 ≤ |
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CVE-2025-11961 (GCVE-0-2025-11961)
Vulnerability from cvelistv5
Published
2025-12-31 00:56
Modified
2026-01-02 14:38
Severity ?
VLAI Severity ?
EPSS score ?
Summary
pcap_ether_aton() is an auxiliary function in libpcap, it takes a string argument and returns a fixed-size allocated buffer. The string argument must be a well-formed MAC-48 address in one of the supported formats, but this requirement has been poorly documented. If an application calls the function with an argument that deviates from the expected format, the function can read data beyond the end of the provided string and write data beyond the end of the allocated buffer.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | libpcap |
Version: 0 ≤ |
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CVE-2024-8006 (GCVE-0-2024-8006)
Vulnerability from cvelistv5
Published
2024-08-30 23:53
Modified
2024-09-03 19:17
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
Remote packet capture support is disabled by default in libpcap. When a user builds libpcap with remote packet capture support enabled, one of the functions that become available is pcap_findalldevs_ex(). One of the function arguments can be a filesystem path, which normally means a directory with input data files. When the specified path cannot be used as a directory, the function receives NULL from opendir(), but does not check the return value and passes the NULL value to readdir(), which causes a NULL pointer derefence.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | libpcap |
Version: 1.9.x Version: 1.10.x ≤ 1.10.4 |
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CVE-2023-7256 (GCVE-0-2023-7256)
Vulnerability from cvelistv5
Published
2024-08-30 23:44
Modified
2024-09-03 20:07
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-415 - Double Free
Summary
In affected libpcap versions during the setup of a remote packet capture the internal function sock_initaddress() calls getaddrinfo() and possibly freeaddrinfo(), but does not clearly indicate to the caller function whether freeaddrinfo() still remains to be called after the function returns. This makes it possible in some scenarios that both the function and its caller call freeaddrinfo() for the same allocated memory block. A similar problem was reported in Apple libpcap, to which Apple assigned CVE-2023-40400.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | libpcap |
Version: 1.8.x Version: 1.9.x Version: 1.10.x ≤ 1.10.4 |
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CVE-2024-2397 (GCVE-0-2024-2397)
Vulnerability from cvelistv5
Published
2024-04-12 13:22
Modified
2025-02-13 17:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Summary
Due to a bug in packet data buffers management, the PPP printer in tcpdump can enter an infinite loop when reading a crafted DLT_PPP_SERIAL .pcap savefile. This problem does not affect any tcpdump release, but it affected the git master branch from 2023-06-05 to 2024-03-21.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | tcpdump |
Version: 0d4083e |
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CVE-2023-1801 (GCVE-0-2023-1801)
Vulnerability from cvelistv5
Published
2023-04-07 20:40
Modified
2025-02-13 16:39
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-787 - out-of-bounds write
Summary
The SMB protocol decoder in tcpdump version 4.99.3 can perform an out-of-bounds write when decoding a crafted network packet.
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | tcpdump |
Version: 4.99.3 |
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CVE-2021-41043 (GCVE-0-2021-41043)
Vulnerability from cvelistv5
Published
2022-01-05 11:34
Modified
2024-08-04 02:59
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - use after free
Summary
Use after free in tcpslice triggers AddressSanitizer, no other confirmed impact.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | tcpslice |
Version: unspecified < 1.5 |
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CVE-2020-8036 (GCVE-0-2020-8036)
Vulnerability from cvelistv5
Published
2020-11-04 17:55
Modified
2024-09-16 23:42
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- overread error
Summary
The tok2strbuf() function in tcpdump 4.10.0-PRE-GIT was used by the SOME/IP dissector in an unsafe way.
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The TCPdump Group | tcpdump |
Version: 4.10.0-PRE-GIT |
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CVE-2020-8037 (GCVE-0-2020-8037)
Vulnerability from cvelistv5
Published
2020-11-04 17:55
Modified
2024-09-16 20:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- memory overallocation error
Summary
The ppp decapsulator in tcpdump 4.9.3 can be convinced to allocate a large amount of memory.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The TCPdump Group | tcpdump |
Version: 4.9.3 |
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CVE-2018-16301 (GCVE-0-2018-16301)
Vulnerability from cvelistv5
Published
2019-10-03 15:55
Modified
2026-10-08 21:13
Severity ?
VLAI Severity ?
EPSS score ?
Summary
The command-line argument parser in tcpdump before 4.99.0 has a buffer overflow in tcpdump.c:read_infile(). To trigger this vulnerability the attacker needs to create a 4GB file on the local filesystem and to specify the file name as the value of the -F command-line argument of tcpdump.
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Tcpdump Group | tcpdump |
Version: unspecified < 4.99.0 |
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"url": "https://github.com/the-tcpdump-group/tcpdump/commit/ad7c25bc0decf96dc7768c9e903734d38528b1bd"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "cfdbb673-b408-4d03-89c1-c3d73ed80896",
"assignerShortName": "Tcpdump",
"cveId": "CVE-2018-16301",
"datePublished": "2019-10-03T15:55:20.000Z",
"dateReserved": "2018-08-31T00:00:00.000Z",
"dateUpdated": "2026-10-08T21:13:46.491Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}