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CVE-2016-5421
Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified…
- 8.1HighCVSS base score
- 8.0%Exploitation in 30 daysEPSS · top 5.2% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.
Timeline
ID reserved
By redhat
- 2 months later
· 2 months later
Published
- 8 years later
· 8 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 | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 8.0% · top 5.2% 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: High 8.1.
Affected products
n/a
- affected n/a
References
15
- RHSA-2018:3558 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://source.android.com/security/bulletin/2016-12-01.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- SSA:2016-219-01 (opens in a new tab)vendor-advisoryx_refsource_SLACKWAREx_transferred
- 92306 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- DSA-3638 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://curl.haxx.se/docs/adv_20160803C.html (opens in a new tab)x_refsource_MISCx_transferred
- openSUSE-SU-2016:2227 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://www.tenable.com/security/tns-2016-18 (opens in a new tab)x_refsource_CONFIRMx_transferred
- openSUSE-SU-2016:2379 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 1036536 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- FEDORA-2016-24316f1f56 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2016-8354baae0f (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- GLSA-201701-47 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- USN-3048-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_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-2016-6366 (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-2016-5421)Record last updated .