SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-4871

An Out-of-bounds Read issue was discovered in Adobe Flash Player before 28.0.0.137.

HIGH 7.5EPSS 5.51%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (5.51%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

An Out-of-bounds Read issue was discovered in Adobe Flash Player before 28.0.0.137. This vulnerability occurs because of computation that reads data that is past the end of the target buffer. The use of an invalid (out-of-range) pointer offset during access of internal data structure fields causes the vulnerability. A successful attack can lead to sensitive data exposure.

CVSS 3.0
7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
5.51% probability · 93th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-125
Affected
redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux workstation · adobe/flash player
Source
psirt@adobe.com
EPSS trend
0%5%10%27 October 2026: 5.51%27 October 202627 October 2026

EPSS 5.5% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.