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CVE-2016-6354
Heap-based buffer overflow in the yy_get_next_buffer function in Flex before 2.6.1 might allow context-dependent attackers to cause a…
- 9.8CriticalCVSS base score
- 9.1%Exploitation in 30 daysEPSS · top 4.6% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Heap-based buffer overflow in the yy_get_next_buffer function in Flex before 2.6.1 might allow context-dependent attackers to cause a denial of service or possibly execute arbitrary code via vectors involving num_to_read.
Timeline
ID reserved
By mitre
- 57 days later
· 57 days 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 | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 9.1% · top 4.6% 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: Critical 9.8.
Affected products
n/a
- affected n/a
References
5
- [oss-security] 20160718 CVE request: flex: Buffer overflow in generated code (yy_get_next_buffer) (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20160726 Re: CVE request: flex: Buffer overflow in generated code (yy_get_next_buffer) (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466 (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-3653 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- GLSA-201701-31 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_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-2016-7277 (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-2016-6354)Record last updated .