# CVE-2005-4900

## Summary

- **CVE ID:** CVE-2005-4900
- **Severity:** MEDIUM
- **CVSS Score:** 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
- **CWE:** N/A
- **Published:** Oct 14, 2016
- **Last Modified:** May 22, 2026

## Description

SHA-1 is not collision resistant, which makes it easier for context-dependent attackers to conduct spoofing attacks, as demonstrated by attacks on the use of SHA-1 in TLS 1.2.  NOTE: this CVE exists to provide a common identifier for referencing this SHA-1 issue; the existence of an identifier is not, by itself, a technology recommendation.

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](https://sites.google.com/site/itstheshappening)
- [CNA](http://www.securityfocus.com/bid/12577)
- [CNA](http://shattered.io/)
- [CNA](https://www.schneier.com/blog/archives/2005/08/new_cryptanalyt.html)
- [CNA](http://www.cwi.nl/news/2017/cwi-and-google-announce-first-collision-industry-security-standard-sha-1)
- [CNA](http://ia.cr/2007/474)
- [CNA](https://security.googleblog.com/2017/02/announcing-first-sha1-collision.html)
- [CNA](https://security.googleblog.com/2015/12/an-update-on-sha-1-certificates-in.html)
- [CNA](https://www.schneier.com/blog/archives/2005/02/sha1_broken.html)
- [CNA](https://arstechnica.com/security/2017/02/at-deaths-door-for-years-widely-used-sha1-function-is-now-dead/)
- [CNA](https://kc.mcafee.com/corporate/index?page=content&id=SB10340)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.25%
- **EPSS Percentile:** 48.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._