CVE-2026-25061
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.
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
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 Medium
CVSS: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 Medium
CVSS: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 Medium
CVSS: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 High
CVSS: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 Medium
CVSS: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 High
CVSS: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 Medium
CVSS: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 High
CVSS: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
| Package | Affected | Fixed |
|---|---|---|
tcpflowDebian:12 |
All versions, plus listed versions 1.6.1-21.6.1-3 |
None known |
tcpflowDebian:13 |
All versions, plus listed versions 1.6.1-3 |
None known |
tcpflowDebian:14 |
All versions, plus listed versions 1.6.1-3 |
None known |
tcpflowDebian:11 |
before 1.5.2+repack1-1+deb11u1, plus listed versions 1.5.2+repack1-1 |
1.5.2+repack1-1+deb11u1 |
tcpflowMageia:9 |
before 1.6.1-3.1.mga9 | 1.6.1-3.1.mga9 |
tcpflowUbuntu: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 |
tcpflowUbuntu:16.04:LTS |
All versions, plus listed versions 1.4.4+repack1-31.4.5+repack1-11.4.5+repack1-1ubuntu0.1 |
None known |
tcpflowUbuntu: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 |
tcpflowUbuntu:20.04:LTS |
All versions, plus listed versions 1.5.2+repack1-1build11.5.2+repack1-1build2 |
None known |
tcpflowUbuntu:22.04:LTS |
All versions, plus listed versions 1.6.1-11.6.1-21.6.1-2build1 |
None known |
Show 4 moreShow less
| Package | Affected | Fixed |
|---|---|---|
tcpflowUbuntu:24.04:LTS |
All versions, plus listed versions 1.6.1-31.6.1-3build11.6.1-3build2 |
None known |
tcpflowUbuntu:25.10 |
All versions, plus listed versions 1.6.1-3build2 |
None known |
tcpflowUbuntu:26.10 |
All versions, plus listed versions 1.6.1-3build31.6.1-3build4 |
None known |
tcpflowUbuntu:26.04:LTS |
All versions, plus listed versions 1.6.1-3build21.6.1-3build3 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE 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
github.com/simsong/tcpflow/security/advisories/GHSA-q5q6-frrv-9rj6
lists.debian.org/debian-lts-announce/2026/02/msg00014.html
github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25061.json
nvd.nist.gov/vuln/detail/CVE-2026-25061
security-tracker.debian.org/tracker/CVE-2026-25061
advisories.mageia.org/MGASA-2026-0113.html