Flex
Vendor:
First CVE: Mar 29, 2006 · Active for 20 years
3
Total CVEs
More Total CVEs than 64% of tracked products
1.0
Avg CVEs / Year
Bottom 1%
7.6
Avg CVSS
Higher Avg CVSS than 60% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Flex over time
Volume of CVEsAvg CVSS Base Score
First CVE
Mar 29, 2006
20 years ago
Most Recent CVE
Jan 15, 2019
2,747 days ago
CVE Severity & Scoring
Flex3 CVEs
33%
33%
33%
All CVEs352,294 CVEs
45%
40%
11%
MediumHighCritical
Attack Vector
Local1 (33.3%)
Network1 (33.3%)
Unknown1 (33.3%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low2 (66.7%)
High0 (0.0%)
Unknown1 (33.3%)
User Interaction
None1 (33.3%)
Unknown1 (33.3%)
Required1 (33.3%)
Privileges Required
Low0 (0.0%)
High0 (0.0%)
None2 (66.7%)
Unknown1 (33.3%)
Top CVEs
Signals from CVEs in this product scope (3 CVEs).
3 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2016-6354CRITICAL 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 arbitrar | Sep 21, 2016 | 9.8 | 34 | NO | NO |
CVE-2006-0459HIGH flex.skl in Will Estes and John Millaway Fast Lexical Analyzer Generator (flex) before 2.5.33 does not allocate enough memory for grammars containing (1) REJECT statements or (2) t | Mar 29, 2006 | 7.5 | 22 | NO | NO |
CVE-2019-6293MEDIUM An issue was discovered in the function mark_beginning_as_normal in nfa.c in flex 2.6.4. There is a stack exhaustion problem caused by the mark_beginning_as_normal function making | Jan 15, 2019 | 5.5 | 20 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (3 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%
Social Chatter
Signals from CVEs in this product scope (3 CVEs).
Media Mentions
Signals from CVEs in this product scope (3 CVEs).
Top CNAs Publishing CVEs For Flex
Top CWEs
Versions
| Version | CVE Count | Avg CVSS | Avg EPSS | KEV | Exploits |
|---|---|---|---|---|---|
| 2.6.4 | 1 | 5.5 | 1.6% | 0 | 0 |