CISA KEV High

CVE-2011-0609 — Adobe Flash Player Unspecified Vulnerability

Unspecified vulnerability in Adobe Flash Player 10.2.154.13 and earlier on Windows, Mac OS X, Linux, and Solaris; 10.1.106.16 and earlier on Android; Adobe AIR 2.5.1 and earlier; and Authplay.dll (aka AuthPlayLib.bundle) in Adobe Reader and Acrobat 9.x through 9.4.2 and 10.x through 10.0.1 on Windows and Mac OS X, allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via crafted Flash content, as demonstrated by a .swf file embedded in an Excel spreadsheet, and as exploited in the wild in March 2011.

Published Mar 15, 2011 · Updated Oct 13, 2026 · Sources: CISA Known Exploited Vulnerabilities, CVE Program (cve.org) e CISA ADP, NIST National Vulnerability Database, GitHub Security Advisories · CNA: adobe

Urgent

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

CISA KEV · Jun 8, 2022 ☠ APT12 Metasploit modules · 1 Exploit-DB · 1

How the score was calculated

Confirmed exploitation (CISA KEV)+35
Exploited by 1 threat actor(s) (MITRE ATT&CK)+10
Public exploit/PoC (metasploit, exploitdb)+20
EPSS 63.5% (30-day exploitation probability)+15
Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Confirmed

CISA KEV, listed Jun 8, 2022

EPSS FIRST

63.51%

ahead of 99% of scored CVEs · Oct 14, 2026

Affects

Adobe

Acrobat and 6 more

CVSS base

7.8

High · 4 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

Active

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

CISA required action CISA

The impacted product is end-of-life and should be disconnected if still in use.

US federal deadline: Jun 22, 2022 — passed 1576 day(s) ago

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Adobe Acrobat, Adobe Acrobat Reader, Adobe Air…).
Treat as emergency remediation: the CVE is in CISA KEV (confirmed exploitation).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Exploitation requires user interaction: tighten email/web filtering and warn affected users.
EPSS ahead of 99% of scored CVEs: prioritize it in the patch queue.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Adobe	Acrobat	≥ 9.0 and ≤ 9.4.2version 10.0version 10.0.1	Vulnerable	NIST National Vulnerability Database
Adobe	Acrobat Reader	≥ 9.0 and ≤ 9.4.2version 10.0version 10.0.1	Vulnerable	NIST National Vulnerability Database
Adobe	Air	≤ 2.5.1	Vulnerable	NIST National Vulnerability Database
Adobe	Flash Player	≤ 10.2.154.13≤ 10.1.106.16	Vulnerable	NIST National Vulnerability Database
Google	Chrome	< 10.0.648.134	Vulnerable	NIST National Vulnerability Database
Opensuse	Opensuse	version 11.2version 11.3version 11.4	Vulnerable	NIST National Vulnerability Database
SUSE	Linux Enterprise	version 10.0-sp3version 11.0-sp1	Vulnerable	NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

Low

Privileges required

None

User interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
7.8	CVSS 3.1	High	1.8	5.9	nvd@nist.gov via NIST National Vulnerability Database
7.8	CVSS 3.1	High	1.8	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0 via NIST National Vulnerability Database
7.8	CVSS 3.1	High	—	—	GitHub, Inc. via GitHub Security Advisories
7.8	CVSS 3.1	High	—	—	CISA-ADP via CVE Program (cve.org) e CISA ADP
9.3	CVSS 2.0	High	8.6	10.0	nvd@nist.gov via NIST National Vulnerability Database

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)

CISA KEV details CISA

CISA lists a CVE once it has evidence of exploitation against real targets.

Listed

Jun 8, 2022

Federal deadline

Jun 22, 2022

passed 1576 day(s) ago

Ransomware use

Unknown

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a reference date.

Public exploits, PoCs and detection templates

Public code that demonstrates or tests the flaw raises the odds of mass exploitation — and Nuclei templates help find vulnerable assets in your environment.

Metasploit modules

Adobe Flash Player AVM Bytecode Verification Vulnerability good Mar 15, 2011

Exploit-DB

Adobe Flash Player - AVM Bytecode Verification (Metasploit) verified Mar 23, 2011

Warning: public PoCs are sometimes disguised malware. Use them only for authorized testing in an isolated environment. This portal does not host exploit code — it only points to the sources.

Threat actors exploiting this CVE MITRE ATT&CK

According to MITRE ATT&CK.

APT12 G0005

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 63.51%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
Hunt retroactively in logs from before Jun 8, 2022 (KEV listing): exploitation may have started earlier.

endpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

2026
Affected products added · adobe/flash player, adobe/acrobat, adobe/acrobat reader, adobe/air, opensuse/opensuse, suse/linux enterprise, google/chr
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · Published → Analyzed
Oct 13, 2026 · NIST National Vulnerability Database
Record published
Oct 13, 2026
CVSS changed · 7.8
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Published
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Added to CISA KEV (detected)
Oct 13, 2026 · CISA Known Exploited Vulnerabilities
Record created in this database
Oct 13, 2026 · CISA Known Exploited Vulnerabilities
2022
Added to CISA KEV catalog
Jun 7, 2022 · CISA
2011
CVE published
Mar 15, 2011 · adobe

Source activity

Repeated readings are counted rather than listed.

3× References added · Oct 13, 2026 – Oct 13, 2026
1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

25 on the record

www.adobe.com/support/security/advisories/apsa11-01.html
x_refsource_CONFIRM, Vendor Advisory, CVE Program (cve.org) e CISA ADP
www.cisa.gov/known-exploited-vulnerabilities-catalog
US Government Resource, NIST National Vulnerability Database
www.securitytracker.com/id
vdb-entry, x_refsource_SECTRACK, Broken Link, Third Party Advisory, VDB Entry, CVE Program (cve.org) e CISA ADP
www.redhat.com/support/errata/RHSA-2011-0372.html
vendor-advisory, x_refsource_REDHAT, Broken Link, CVE Program (cve.org) e CISA ADP
www.adobe.com/support/security/bulletins/apsb11-06.html
x_refsource_CONFIRM, Not Applicable, CVE Program (cve.org) e CISA ADP
nvd.nist.gov/vuln/detail/CVE-2011-0609
GitHub Security Advisories
lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html
vendor-advisory, x_refsource_SUSE, Mailing List, Third Party Advisory, CVE Program (cve.org) e CISA ADP
www.kb.cert.org/vuls/id/192052
third-party-advisory, x_refsource_CERT-VN, Third Party Advisory, US Government Resource, CVE Program (cve.org) e CISA ADP
www.vupen.com/english/advisories/2011/0688
vdb-entry, x_refsource_VUPEN, Broken Link, CVE Program (cve.org) e CISA ADP
secunia.com/advisories/43751
third-party-advisory, x_refsource_SECUNIA, Broken Link, CVE Program (cve.org) e CISA ADP
github.com/advisories/GHSA-g9g3-3gv9-454q
GitHub Security Advisories
secunia.com/advisories/43772
third-party-advisory, x_refsource_SECUNIA, Broken Link, CVE Program (cve.org) e CISA ADP
www.securitytracker.com/id
vdb-entry, x_refsource_SECTRACK, Broken Link, Third Party Advisory, VDB Entry, CVE Program (cve.org) e CISA ADP
secunia.com/advisories/43856
third-party-advisory, x_refsource_SECUNIA, Broken Link, CVE Program (cve.org) e CISA ADP
googlechromereleases.blogspot.com/2011/03/stable-and-beta-channel-updates_15.html
x_refsource_MISC, Third Party Advisory, CVE Program (cve.org) e CISA ADP
www.securityfocus.com/bid/46860
vdb-entry, x_refsource_BID, Broken Link, Third Party Advisory, VDB Entry, CVE Program (cve.org) e CISA ADP
www.vupen.com/english/advisories/2011/0732
vdb-entry, x_refsource_VUPEN, Broken Link, CVE Program (cve.org) e CISA ADP
www.vupen.com/english/advisories/2011/0655
vdb-entry, x_refsource_VUPEN, Broken Link, CVE Program (cve.org) e CISA ADP
exchange.xforce.ibmcloud.com/vulnerabilities/66078
vdb-entry, x_refsource_XF, Third Party Advisory, VDB Entry, CVE Program (cve.org) e CISA ADP
secunia.com/advisories/43757
third-party-advisory, x_refsource_SECUNIA, Broken Link, CVE Program (cve.org) e CISA ADP
securityreason.com/securityalert/8152
third-party-advisory, x_refsource_SREASON, Broken Link, CVE Program (cve.org) e CISA ADP
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14147
vdb-entry, signature, x_refsource_OVAL, Broken Link, CVE Program (cve.org) e CISA ADP
www.securitytracker.com/id
vdb-entry, x_refsource_SECTRACK, Broken Link, Third Party Advisory, VDB Entry, CVE Program (cve.org) e CISA ADP
www.vupen.com/english/advisories/2011/0656
vdb-entry, x_refsource_VUPEN, Broken Link, CVE Program (cve.org) e CISA ADP
blogs.adobe.com/asset/2011/03/background-on-apsa11-01-patch-schedule.html
x_refsource_CONFIRM, Broken Link, CVE Program (cve.org) e CISA ADP

Elsewhere on this site

Adobe
every CVE for this vendor

2022-06
what else CISA listed that month

Related CVEs (same products)

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Critical CVE-2026-110161 Use after free in Network in Google Chrome prior to 155.0.8059.79 allowed a remote attacker to... 1d
High CVE-2026-110163 Use after free in DOM in Google Chrome prior to 155.0.8059.79 allowed a remote attacker to... 1d
High CVE-2026-110162 Use after free in Desktop in Google Chrome prior to 155.0.8059.79 allowed a remote attacker to... 1d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No fixed version, patch or mitigation documented.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2011-0609 is "Adobe Flash Player Unspecified Vulnerability", rated High. It affects Acrobat (Adobe); versions are in the scope table. It is in CISA KEV: there is evidence of real-world exploitation. CVSS 7.8 describes technical severity. EPSS 63.51% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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