PatchSiren

PatchSiren cyber security CVE debrief

CVE-2016-7855 Adobe CVE debrief

CVE-2016-7855 is an Adobe Flash Player use-after-free vulnerability that CISA included in its Known Exploited Vulnerabilities catalog. The supplied CISA record treats Flash Player as end-of-life and says it should be disconnected if still in use. Because this is a KEV-listed issue in legacy software, any remaining exposure should be handled as an urgent decommissioning and containment problem rather than a routine patch task.

Vendor
Adobe
Product
Flash Player
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-03-03
Original CVE updated
2022-03-03
Advisory published
2022-03-03
Advisory updated
2022-03-03

Who should care

Security teams, endpoint administrators, and application owners with any remaining Adobe Flash Player deployments should pay attention, especially where legacy web apps, kiosks, or isolated business systems still depend on Flash.

Technical summary

The provided sources identify CVE-2016-7855 as a use-after-free vulnerability in Adobe Flash Player and record it as a known exploited vulnerability. The corpus does not include affected version ranges, exploit details, or vendor remediation guidance beyond the CISA note. The key defensive point from the supplied material is that the impacted product is end-of-life, so any surviving deployment represents a high-risk legacy exposure that should be disconnected if it cannot be fully removed.

Defensive priority

Urgent

Recommended defensive actions

  • Inventory any systems, browsers, plug-ins, or embedded runtimes that still rely on Adobe Flash Player.
  • Remove Flash Player wherever possible; treat remaining use as legacy exposure that should be retired.
  • If Flash cannot be removed immediately, disconnect or isolate the affected system as CISA recommends for this end-of-life product.
  • Restrict network access to any unavoidable legacy hosts and minimize user interaction paths.
  • Verify that no business-critical workflow still depends on Flash before disabling it, then migrate the workflow to supported technology.
  • Track and document remediation progress for any known-exposed assets until Flash is fully eliminated.

Evidence notes

CISA's Known Exploited Vulnerabilities entry for this CVE lists Adobe as the vendor, Flash Player as the product, and states: 'The impacted product is end-of-life and should be disconnected if still in use.' The supplied source also links to the NVD record for CVE-2016-7855, but no additional version or exploit details are included in the provided corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2016-7855 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2016-7855

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2016-7855 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2016-7855

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.