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CVE-2026-25061

tcpflow has TIM Element OOB Write in wifipcap

5.5 MediumFix available

tcpflow is a TCP/IP packet demultiplexer. In versions up to and including 1.61, wifipcap parses 802.11 management frame elements and performs a length check on the wrong field when handling the TIM element. A crafted frame with a large TIM length can cause a 1-byte out-of-bounds write past tim.bitmap[251]. The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. The affected structure is stack-allocated in handle_beacon() and related handlers. As of time of publication, no known patches are available.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
Low

Exploit likelihood

0.57%Up 0.5 points since Jan 30, 2026
90%50%10%1%

What each source reports

CVE List Score used 5.5

tcpflow has TIM Element OOB Write in wifipcap

tcpflow is a TCP/IP packet demultiplexer. In versions up to and including 1.61, wifipcap parses 802.11 management frame elements and performs a length check on the wrong field when handling the TIM element. A crafted frame with a large TIM length can cause a 1-byte out-of-bounds write past tim.bitmap[251]. The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. The affected structure is stack-allocated in handle_beacon() and related handlers. As of time of publication, no known patches are available.

Record
CVE-2026-25061
CVSS 4.0
5.5 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Weakness
CWE-787
Updated
2026-11-02
EUVDEUVD-2026-4944 5.5

tcpflow is a TCP/IP packet demultiplexer. In versions up to and including 1.61, wifipcap parses 802.11 management frame elements and performs a length check on the wrong field when handling the TIM element. A crafted frame with a large TIM length can cause a 1-byte out-of-bounds write past tim.bitmap[251]. The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. The affected structure is stack-allocated in handle_beacon() and related handlers. As of time of publication, no known patches are available.

Record
EUVD-2026-4944
CVSS 4.0
5.5 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Updated
2026-11-02
NVD 5.5

tcpflow is a TCP/IP packet demultiplexer. In versions up to and including 1.61, wifipcap parses 802.11 management frame elements and performs a length check on the wrong field when handling the TIM element. A crafted frame with a large TIM length can cause a 1-byte out-of-bounds write past tim.bitmap[251]. The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. The affected structure is stack-allocated in handle_beacon() and related handlers. As of time of publication, no known patches are available.

Record
CVE-2026-25061
CVSS 4.0
5.5 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-787
Updated
2026-11-02
OSV 5.5

tcpflow has TIM Element OOB Write in wifipcap

tcpflow is a TCP/IP packet demultiplexer. In versions up to and including 1.61, wifipcap parses 802.11 management frame elements and performs a length check on the wrong field when handling the TIM element. A crafted frame with a large TIM length can cause a 1-byte out-of-bounds write past tim.bitmap[251]. The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. The affected structure is stack-allocated in handle_beacon() and related handlers. As of time of publication, no known patches are available.

Record
CVE-2026-25061
CVSS 4.0
5.5 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Weakness
CWE-787
Updated
2026-11-02
OSVDEBIAN-CVE-2026-25061 7.5

tcpflow is a TCP/IP packet demultiplexer. In versions up to and including 1.61, wifipcap parses 802.11 management frame elements and performs a length check on the wrong field when handling the TIM element. A crafted frame with a large TIM length can cause a 1-byte out-of-bounds write past tim.bitmap[251]. The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. The affected structure is stack-allocated in handle_beacon() and related handlers. As of time of publication, no known patches are available.

Record
DEBIAN-CVE-2026-25061
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-25061 5.5

tcpflow is a TCP/IP packet demultiplexer. In versions up to and including 1.61, wifipcap parses 802.11 management frame elements and performs a length check on the wrong field when handling the TIM element. A crafted frame with a large TIM length can cause a 1-byte out-of-bounds write past tim.bitmap[251]. The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. The affected structure is stack-allocated in handle_beacon() and related handlers. As of time of publication, no known patches are available.

Record
UBUNTU-CVE-2026-25061
CVSS 4.0
5.5 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVMGASA-2026-0113 No score

Updated tcpflow packages fix security vulnerability

tcpflow has TIM Element OOB Write in wifipcap. (CVE-2026-25061)

Record
MGASA-2026-0113
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
tcpflow
Debian:12
All versions, plus listed versions
1.6.1-21.6.1-3
None known
tcpflow
Debian:13
All versions, plus listed versions
1.6.1-3
None known
tcpflow
Debian:14
All versions, plus listed versions
1.6.1-3
None known
tcpflow
Debian:11
before 1.5.2+repack1-1+deb11u1, plus listed versions
1.5.2+repack1-1
1.5.2+repack1-1+deb11u1
tcpflow
Mageia:9
before 1.6.1-3.1.mga9
1.6.1-3.1.mga9
tcpflow
Ubuntu:Pro:14.04:LTS
All versions, plus listed versions
1.3.0+dfsg-21.4.3+repack1-11.4.4+repack1-11.4.4+repack1-21.4.4+repack1-2ubuntu0.1~esm1
None known
tcpflow
Ubuntu:16.04:LTS
All versions, plus listed versions
1.4.4+repack1-31.4.5+repack1-11.4.5+repack1-1ubuntu0.1
None known
tcpflow
Ubuntu:18.04:LTS
All versions, plus listed versions
1.4.5+repack1-41.4.5+repack1-4build11.4.5+repack1-4build21.4.5+repack1-4ubuntu0.18.04.1
None known
tcpflow
Ubuntu:20.04:LTS
All versions, plus listed versions
1.5.2+repack1-1build11.5.2+repack1-1build2
None known
tcpflow
Ubuntu:22.04:LTS
All versions, plus listed versions
1.6.1-11.6.1-21.6.1-2build1
None known
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Affected packages
PackageAffectedFixed
tcpflow
Ubuntu:24.04:LTS
All versions, plus listed versions
1.6.1-31.6.1-3build11.6.1-3build2
None known
tcpflow
Ubuntu:25.10
All versions, plus listed versions
1.6.1-3build2
None known
tcpflow
Ubuntu:26.10
All versions, plus listed versions
1.6.1-3build31.6.1-3build4
None known
tcpflow
Ubuntu:26.04:LTS
All versions, plus listed versions
1.6.1-3build21.6.1-3build3
None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-25061 is a medium vulnerability (CVSS 5.5) in Digitalcorpora Tcpflow, published January 29, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.57%, the 47th percentile. Fixed in tcpflow 1.5.2+repack1-1+deb11u1.

References

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