cbcvebase.
CVE-2015-8420
published 2015-12-10

CVE-2015-8420: 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…

PriorityP264critical10CVSS 2.0
AVNACLAuNCCICAC
EXPLOIT
EPSS
43.41%
98.6th percentile
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-2015-8421, CVE-2015-8422, CVE-2015-8423, 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.

Affected

12 ranges
VendorProductVersion rangeFixed in
adobeair<= 19.0.0.241—
adobeair_desktop_runtime<= 19.0.0.241—
adobeair_sdk<= 19.0.0.241—
adobeair_sdk_compiler<= 19.0.0.241—
adobeflash_player<= 11.2.202.548—
adobeflash_player<= 18.0.0.261—
adobeflash_player<= 19.0.0.245—
adobeflash_player——
adobeflash_player——
adobeflash_player——
adobeflash_player——
adobeflash_player_desktop_runtime<= 19.0.0.245—

Detection & IOCsextracted from sources · hover to see the quote

urlhttps://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39044.zip↗
  • →Use-after-free triggered via TextField.sharpness setter in Adobe Flash — look for ActionScript setting `sharpness` property to an object with a custom `valueOf` function that removes the TextField's parent MovieClip ↗
  • →Exploit pattern involves calling `mc.removeMovieClip()` inside a `valueOf` callback triggered during the `sharpness` property assignment — monitor for SWF files exhibiting this pattern ↗
  • →Vulnerable Adobe Flash Player versions: before 18.0.0.268, 19.x and 20.x before 20.0.0.228 on Windows/OS X, and before 11.2.202.554 on Linux — flag processes running these versions ↗
  • ·The NVD source document is for CVE-2015-8067, not CVE-2015-8420 directly; CVE-2015-8420 is listed as one of many related use-after-free variants sharing the same affected version ranges and advisory ↗
  • ·The Exploit-DB PoC (39044) is attributed to the TextField.sharpness setter UAF and is sourced from Google Security Research issue #588; it may correspond to CVE-2015-8420 specifically but the exact CVE mapping is not explicitly confirmed in the source documents ↗

CVSS provenance

nvdv2.010.0CRITICALAV:N/AC:L/Au:N/C:C/I:C/A:C
osv10.0CRITICAL
vendor_redhat10.0CRITICAL
CVEs like this are exactly what “Exploited This Week” covers.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.