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CVE-2006-1721digestmd5.c in the CMU Cyrus Simple Authentication and Security Layer (SASL) library 2.1.18, and possibly other versions before 2.1.21,…
- 2.6LowCVSS base score
- 2.5%Exploitation in 30 daysEPSS · top 15% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
digestmd5.c in the CMU Cyrus Simple Authentication and Security Layer (SASL) library 2.1.18, and possibly other versions before 2.1.21, allows remote unauthenticated attackers to cause a denial of service (segmentation fault) via malformed inputs in DIGEST-MD5 negotiation.
Timeline
ID reserved
By mitre
Published
- 18 years later
· 18 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Low2.6 | AV:N/AC:H/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 2.5% · top 15% of all CVEs (14 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.6.
Affected products
n/a
- affected n/a
References
References33
- 26708 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2008-1744 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 19825 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://asg.web.cmu.edu/archive/message.php?mailbox=archive.cyrus-sasl&msg=7775 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 19809 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 19618 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 19753 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- oval:org.mitre.oval:def:9861 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- cyrus-sasl-digest-dos(25738) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://support.avaya.com/elmodocs2/security/ASA-2007-426.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://labs.musecurity.com/advisories/MU-200604-01.txt (opens in a new tab)x_refsource_MISCx_transferred
- 26857 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://www.vmware.com/security/advisories/VMSA-2008-0009.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20060410 [MU-200604-01] Cyrus SASL DIGEST-MD5 Pre-Authentication Denial of Service (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 22187 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- MDKSA-2006:073 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- ADV-2006-3852 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 27237 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- RHSA-2007:0878 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2007:0795 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 20014 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- APPLE-SA-2006-09-29 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
- 30535 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 17446 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 19964 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 20080604 VMSA-2008-0009 Updates to VMware Workstation, VMware Player, VMware ACE, VMware Fusion, VMware Server, VMware VIX API, VMware ESX, VMware ESXi resolve critical security issues (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 2006-0024 (opens in a new tab)vendor-advisoryx_refsource_TRUSTIXx_transferred
- USN-272-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- SUSE-SA:2006:025 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 1016960 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- GLSA-200604-09 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- ADV-2006-1306 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- DSA-1042 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2006-1721 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2006-1721)Record last updated .