CVE-2011-0611
Adobe Flash Player before 10.2.154.27 on Windows, Mac OS X, Linux, and Solaris and 10.2.156.12 and earlier on Android; Adobe AIR before 2.6.19140; and Authplay.dll (aka AuthPlayLib.bundle) in Adobe Reader 9.x before 9.4.4 and 10.x through 10.0.1 on Windows, Adobe Reader 9.x before 9.4.4 and 10.x before 10.0.3 on Mac OS X, and Adobe Acrobat 9.x before 9.4.4 and 10.x before 10.0.3 on Windows and Mac OS X allow remote attackers to execute arbitrary code or cause a denial of service (application crash) via crafted Flash content; as demonstrated by a Microsoft Office document with an embedded .swf file that has a size inconsistency in a "group of included constants," object type confusion, ActionScript that adds custom functions to prototypes, and Date objects; and as exploited in the wild in April 2011.
- CVSS
- 8.8Highscored by CISA
- Exploited in the wild
- Yes, in CISA KEV since 3 Mar 2022CISA deadline for US federal agencies: 24 Mar 2022public exploit code
- EPSS
- 99.4%chance of exploitation in the next 30 daystop 0.1% of scored CVEsFIRST score of 11 Nov 2026
- Fix
- Patch availablesee the advisories in the references
- Published
- 13 Apr 2011analysed here 12 Nov 2026
Do first. The impacted product is end-of-life and should be disconnected if still in use. (CISA's required action for this KEV entry)
Summary
Triage
The summary, impact and action text on this page are written by our AI analysis pipeline, or taken from the NVD description when a CVE was imported from NVD. They are not the vendor's wording: check them against the sources. A longer AI executive summary and technical analysis are generated for signed-in accounts on the Max plan.
Affected products
Products named in our analysis
- adobe:flash_player
- adobe:acrobat_reader
- adobe:adobe_air
- adobe:acrobat
- google:chrome
- opensuse:opensuse
- suse:linux_enterprise_desktop
Fix and mitigation
WAF and other mitigations
Can a WAF block it? Partly. The bug can be reached over the network, so generic WAF rules may stop some attacks. Its weakness type is unknown, so we cannot be more precise.
Also consider: patch
Based on the weakness type only; no CVE-specific evidence yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.
Remediation steps (AI-written)
Step-by-step remediation is generated for accounts on the Max plan, for CVEs that match a technology in their stack. Add this technology to your stack to see the fix checklist.
Exploitation evidence
- CISA KEV catalog
- Listed since 3 Mar 2022.
- CISA due date
- 24 Mar 2022, the remediation deadline for US federal agencies
- CISA required action
- The impacted product is end-of-life and should be disconnected if still in use.
- Public exploit code
- Yes: 2 on Exploit-DB · 1 Metasploit module
- CISA SSVC
- exploitation active, automatable no, technical impact totalAssessed by CISA 2 Feb 2024 (SSVC 2.0.3). Exploitation is none, poc (public proof of concept) or active.
Exploit-DB
- Adobe Reader X 10.0.0 < 10.0.1 - Atom Type Confusionlocal, 3 Jul 2011, verified by Exploit-DB
- Adobe Flash Player 10.2.153.1 - SWF Memory Corruption (Metasploit)remote, 16 Apr 2011, verified by Exploit-DB
Metasploit
- exploit/windows/browser/adobe_flashplayer_flash10oexploit, rank normal
Listed so you can judge urgency, not as a recommendation to run anything. GitHub “proofs of concept” are unvetted: some are fake or carry malware. Exploit-DB marks the entries its staff verified.
Timeline
- 13 Apr 2011Published
- 16 Apr 2011First public exploit or proof of concept2 days later
- 3 Mar 2022Added to CISA KEV (exploited in the wild)3,974 days (about 11 years) later
- 24 Mar 2022CISA remediation due date (US federal agencies)21 days later
- 2 Feb 2024CISA SSVC assessment: exploitation active681 days (about 2 years) later
- 22 Oct 2025CVE record last updated627 days (about 2 years) later
- 12 Nov 2026Analysed by vulneraibility.com387 days (about 1 year) later
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
| Metric | Value | What it means |
|---|---|---|
| Attack vector | NetworkReachable over the internet or any routable network. | Reachable over the internet or any routable network. |
| Attack complexity | LowRepeatable attack, no special conditions. | Repeatable attack, no special conditions. |
| Privileges required | NoneThe attacker needs no prior access. | The attacker needs no prior access. |
| User interaction | RequiredA victim must click, open or otherwise cooperate. | A victim must click, open or otherwise cooperate. |
| Scope | UnchangedImpact stays within the vulnerable component. | Impact stays within the vulnerable component. |
| Confidentiality | HighTotal data disclosure possible. | Total data disclosure possible. |
| Integrity | HighComplete modification possible. | Complete modification possible. |
| Availability | HighFull outage possible. | Full outage possible. |
Common questions
Is CVE-2011-0611 being exploited?
Yes. CVE-2011-0611 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2011-0611?
CVE-2011-0611 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2011-0611?
Yes. A fix has been recorded for CVE-2011-0611. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2011-0611 affect?
CVE-2011-0611 affects adobe:flash_player, adobe:acrobat_reader, adobe:adobe_air, adobe:acrobat, and 3 further products or versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
References
26 references in the CVE record, grouped by the tags the record gives them.
Advisories (8)
- securityreason.com /securityalert/8204
- redhat.com /support/errata/RHSA-2011-0451.html
- lists.opensuse.org /opensuse-security-announce/2011-04/msg00004.html
- securityreason.com /securityalert/8292
- secunia.com /advisories/44149
- secunia.com /advisories/44141
Show 2 more
- secunia.com /advisories/44119
- kb.cert.org /vuls/id/230057
Exploits (1)
- exploit-db.com /exploits/17175
Other links (17)
- bugix-security.blogspot.com /2011/04/cve-2011-0611-adobe-flash-zero-day.html
- oval.cisecurity.org /repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14175
- securityfocus.com /bid/47314
- secunia.com /blog/210/
- vupen.com /english/advisories/2011/0922
- adobe.com /support/security/bulletins/apsb11-07.html
Show 11 more
- exchange.xforce.ibmcloud.com /vulnerabilities/66681
- vupen.com /english/advisories/2011/0924
- securitytracker.com /id?1025325
- blogs.technet.com /b/mmpc/archive/2011/04/12/analysis-of-the-cve-2011-0611-adobe-flash-player-vuln
- contagiodump.blogspot.com /2011/04/apr-8-cve-2011-0611-flash-player-zero.html
- vupen.com /english/advisories/2011/0923
- adobe.com /support/security/advisories/apsa11-02.html
- googlechromereleases.blogspot.com /2011/04/stable-channel-update.html
- adobe.com /support/security/bulletins/apsb11-08.html
- securitytracker.com /id?1025324
- cisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-0611
Where the data on this page comes from
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA KEV catalog: exploitation, date added, due date
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- Exploit-DB: published exploits
- Metasploit Framework: exploit and scanner modules
Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.
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