01 Record
CVE-2005-4900
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
MediumPUBLISHEDCNA: mitre
CNA base score5.9 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
02 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
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.93% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 60.4% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (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:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
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
- 2016-10-14 16:00Z10 YR AGO
- Last updated
- 2026-05-22 16:18Z5 MO AGO
- Reserved
- 2016-10-14
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.9)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- Data version
- 5.2
- Document digest
- 80cc90261df6c56b9898d6dfcbde0d290fd8ce58315bb4ba137baa164ee6de79
05 Affected products
VendorProductVersionsPlatforms
06 References
- sites.google.comhttps://sites.google.com/site/itstheshappening
- www.securityfocus.com12577http://www.securityfocus.com/bid/12577
- shattered.iohttp://shattered.io/
- www.schneier.comhttps://www.schneier.com/blog/archives/2005/08/new_cryptanalyt.html
- www.cwi.nlhttp://www.cwi.nl/news/2017/cwi-and-google-announce-first-collision-industry-security-standard-sha-1
- ia.crhttp://ia.cr/2007/474
- security.googleblog.comhttps://security.googleblog.com/2017/02/announcing-first-sha1-collision.html
- security.googleblog.comhttps://security.googleblog.com/2015/12/an-update-on-sha-1-certificates-in.html
- www.schneier.comhttps://www.schneier.com/blog/archives/2005/02/sha1_broken.html
- arstechnica.comhttps://arstechnica.com/security/2017/02/at-deaths-door-for-years-widely-used-sha1-function-is-now-dead/
- kc.mcafee.comhttps://kc.mcafee.com/corporate/index?page=content&id=SB10340