synced 11 MIN AGO
01 Record

CVE-2016-5696

net/ipv4/tcp_input.c in the Linux kernel before 4.7 does not properly determine the rate of challenge ACK segments, which makes it easier for remote attackers to hijack TCP sessions via a blind

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

net/ipv4/tcp_input.c in the Linux kernel before 4.7 does not properly determine the rate of challenge ACK segments, which makes it easier for remote attackers to hijack TCP sessions via a blind

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
14.50% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 96.5% of scored records. A rank, not a probability.
NVD base score
4.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2016-08-06 20:00Z10 YR AGO
Last updated
2024-08-06 01:08Z2 YR AGO
Reserved
2016-06-16
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
  • CWE-203Observable DiscrepancyBase
Data version
5.1
Document digest
0d8930ba7e53f78d43a282375710bf15cc62ed918d0abc0a274dad02008b1e8a

05 Affected products

VendorProductVersionsPlatforms
googleandroidNot specified—
linuxlinux_kernelNot specified—
oraclevm_serverNot specified—
redhatenterprise_linuxNot specified—
redhatenterprise_mrgNot specified—
redhatrhel_ausNot specified—
redhatrhel_eusNot specified—
redhatrhel_extras_rtNot specified—

06 References

07 Fixed in

Debian 12

  • linux
    Fixed in 4.7.2-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • linux
    Fixed in 4.7.2-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • linux
    Fixed in 4.7.2-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • linux
    Fixed in 3.13.0-95.142
  • linux-lts-vivid
    Fixed in 3.19.0-68.76~14.04.1
  • linux-lts-xenial
    Fixed in 4.4.0-36.55~14.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • linux
    Fixed in 4.4.0-36.55
  • linux-raspi2
    Fixed in 4.4.0-1021.27
  • linux-snapdragon
    Fixed in 4.4.0-1024.27

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.