Use-after-free vulnerability in Adobe Flash Player before 18.0.0.268 and 19.x and 20.x before 20.0.0.228 on Windows and OS X and before 11.2.202.554 on Linux, Adobe AIR before 20.0.0.204, Adobe AIR SDK before 20.0.0.204, and Adobe AIR SDK & Compiler before 20.0.0.204 allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2015-8048, CVE-2015-8049, CVE-2015-8050, CVE-2015-8055, CVE-2015-8056, CVE-2015-8057, CVE-2015-8058, CVE-2015-8059, CVE-2015-8061, CVE-2015-8062, CVE-2015-8063, CVE-2015-8064, CVE-2015-8065, CVE-2015-8066, CVE-2015-8067, CVE-2015-8068, CVE-2015-8069, CVE-2015-8070, CVE-2015-8071, CVE-2015-8401, CVE-2015-8402, CVE-2015-8403, CVE-2015-8404, CVE-2015-8405, CVE-2015-8406, CVE-2015-8410, CVE-2015-8411, CVE-2015-8412, CVE-2015-8413, CVE-2015-8414, CVE-2015-8420, CVE-2015-8421, CVE-2015-8422, CVE-2015-8424, CVE-2015-8425, CVE-2015-8426, CVE-2015-8427, CVE-2015-8428, CVE-2015-8429, CVE-2015-8430, CVE-2015-8431, CVE-2015-8432, CVE-2015-8433, CVE-2015-8434, CVE-2015-8435, CVE-2015-8436, CVE-2015-8437, CVE-2015-8441, CVE-2015-8442, CVE-2015-8447, CVE-2015-8448, CVE-2015-8449, CVE-2015-8450, CVE-2015-8452, and CVE-2015-8454.
Conclusion & alert: CVE-2015-8423 is rated High Exploit Risk (94.7/100): CVSS Critical severity, with high exploitation likelihood (EPSS 77.92%, 99th percentile). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +15.13% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 39047 | exploit_db | edb | 2015-12-18 | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-16 | 62.78% | 77.92% | +15.13% |
| 2 | 2026-05-13 | 57.03% | 62.78% | +5.76% |
| 3 | 2026-01-31 | — | 57.03% | — |
Full EPSS history (44 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
normal | CVE-2015-8423: 1 GLSA(s) (201601-03), 1 atom(s) (www-plugins/adobe-flash); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-8423 |
redhat
|
critical | — | https://access.redhat.com/security/cve/CVE-2015-8423 |
ubuntu
|
medium | CVE-2015-8423 medium priority: Ubuntu including 2 source packages (adobe-flashplugin, flashplugin-nonfree), 10 status rows across 5 suites (precise, trusty, upstream, vivid, wily): released 10. | https://ubuntu.com/security/CVE-2015-8423 |
: <a href="https://cwe.mitre.org/data/definitions/416.html">CWE-416: Use After Free</a>
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| adobe | air_sdk | <= 19.0.0.241 | cpe:2.3:a:adobe:air_sdk:*:*:*:*:*:*:*:* |
| adobe | air_sdk_\&_compiler | <= 19.0.0.241 | cpe:2.3:a:adobe:air_sdk_\&_compiler:*:*:*:*:*:*:*:* |
| adobe | flash_player | <= 11.2.202.548 | cpe:2.3:a:adobe:flash_player:*:*:*:*:*:*:*:* |
| adobe | air | <= 19.0.0.241 | cpe:2.3:a:adobe:air:*:*:*:*:*:*:*:* |
| adobe | flash_player | <= 18.0.0.261 | cpe:2.3:a:adobe:flash_player:*:*:*:*:*:*:*:* |
| adobe | flash_player | 19.0.0.185 | cpe:2.3:a:adobe:flash_player:19.0.0.185:*:*:*:*:*:*:* |
| adobe | flash_player | 19.0.0.207 | cpe:2.3:a:adobe:flash_player:19.0.0.207:*:*:*:*:*:*:* |
| adobe | flash_player | 19.0.0.226 | cpe:2.3:a:adobe:flash_player:19.0.0.226:*:*:*:*:*:*:* |
| adobe | flash_player | 19.0.0.245 | cpe:2.3:a:adobe:flash_player:19.0.0.245:*:*:*:*:*:*:* |