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CVE-2017-5383
URLs containing certain unicode glyphs for alternative hyphens and quotes do not properly trigger punycode display, allowing for domain…
- 5.3MediumCVSS base score
- 2.4%Exploitation in 30 daysEPSS · top 16% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
URLs containing certain unicode glyphs for alternative hyphens and quotes do not properly trigger punycode display, allowing for domain name spoofing attacks in the location bar. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.
Timeline
ID reserved
By mozilla
- 17 months later
· 17 months later
Published
- 6 years later
· 6 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 | 3.0 | Medium5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 2.4% · top 16% of all CVEs (10 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
- affected unspecified – < 45.7
- affected unspecified – < 45.7
- affected unspecified – < 51
References
13
- https://www.mozilla.org/security/advisories/mfsa2017-03/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.mozilla.org/security/advisories/mfsa2017-02/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- GLSA-201702-22 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=1323338 (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-3832 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- GLSA-201702-13 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- DSA-3771 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 1037693 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- https://www.mozilla.org/security/advisories/mfsa2017-01/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2017:0190 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:0238 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=1324716 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 95769 (opens in a new tab)vdb-entryx_refsource_BIDx_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-2017-14487 (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)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-5383)Record last updated .