CVE-2009-2877

CVE-2009-2877 is a critical-severity vulnerability in Cisco Webex with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

• Severity: Critical (CVSS 2.0 base score 9.3)
• EPSS exploit prediction: 5% (91st percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Cisco Webex
• Published: 2009-12-18
• Last modified: 2026-06-16

Description

Stack-based buffer overflow in ataudio.dll in the Cisco WebEx WRF Player 26.x before 26.49.32 for Windows, 27.x before 27.10.x (aka T27SP10) for Windows, 26.x before 26.49.35 for Mac OS X and Linux, and 27.x before 27.11.8 for Mac OS X and Linux allows remote attackers to cause a denial of service (application crash) or execute arbitrary code via a crafted WebEx Recording Format (WRF) file.

Frequently asked questions

What is CVE-2009-2877?

Stack-based buffer overflow in ataudio.dll in the Cisco WebEx WRF Player 26.x before 26.49.32 for Windows, 27.x before 27.10.x (aka T27SP10) for Windows, 26.x before 26.49.35 for Mac OS X and Linux, and 27.x before 27.11.8 for Mac OS X and Linux allows remote attackers to cause a denial of service (application crash) or execute arbitrary code via a crafted WebEx Recording Format (WRF) file.

How severe is CVE-2009-2877?

CVE-2009-2877 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2009-2877 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2877?

CVE-2009-2877 primarily affects Cisco Webex. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2877?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2009-2877 published?

CVE-2009-2877 was published on 2009-12-18 and last updated on 2026-06-16.

References

• http://secunia.com/advisories/37810
• http://securitytracker.com/id?1023360
• http://tools.cisco.com/security/center/viewAlert.x?alertId=19499
• http://tools.cisco.com/security/center/viewIpsSignature.x?signatureId=22660&signatureSubId=0&softwareVersion=6.0&releaseVersion=S456
• http://tools.cisco.com/security/center/viewIpsSignature.x?signatureId=22661&signatureSubId=0&softwareVersion=6.0&releaseVersion=S456
• http://tools.cisco.com/security/center/viewIpsSignature.x?signatureId=22662&signatureSubId=0&softwareVersion=6.0&releaseVersion=S456
• http://tools.cisco.com/security/center/viewIpsSignature.x?signatureId=22663&signatureSubId=0&softwareVersion=6.0&releaseVersion=S456
• http://tools.cisco.com/security/center/viewIpsSignature.x?signatureId=22799&signatureSubId=0&softwareVersion=6.0&releaseVersion=S456
• http://tools.cisco.com/security/center/viewIpsSignature.x?signatureId=23040&signatureSubId=0&softwareVersion=6.0&releaseVersion=S456
• http://www.cisco.com/en/US/products/products_security_advisory09186a0080b0a577.shtml
• http://www.fortiguard.com/advisory/FGA-2009-48.html
• http://www.fortiguard.com/encyclopedia/vulnerability/cisco.webex.player.ataudio.buffer.overflow.html
• http://www.osvdb.org/61127
• http://www.securityfocus.com/bid/37352
• http://www.vupen.com/english/advisories/2009/3574
• https://exchange.xforce.ibmcloud.com/vulnerabilities/54841

Affected products (6)

• cpe:2.3:a:cisco:webex:26.00:*:linux:*:*:*:*:*
• cpe:2.3:a:cisco:webex:26.00:*:mac_os_x:*:*:*:*:*
• cpe:2.3:a:cisco:webex:26.00:*:windows:*:*:*:*:*
• cpe:2.3:a:cisco:webex:27.00:*:linux:*:*:*:*:*
• cpe:2.3:a:cisco:webex:27.00:*:mac_os_x:*:*:*:*:*
• cpe:2.3:a:cisco:webex:27.00:*:windows:*:*:*:*:*

More vulnerabilities in Cisco Webex

• CVE-2009-2880 — Critical (CVSS 9.3): Buffer overflow in atrpui.dll in the Cisco WebEx WRF Player 26.x before 26.49.32 for Windows, 27.x before 27.10.x for…
• CVE-2009-2879 — Critical (CVSS 9.3): Heap-based buffer overflow in atas32.dll in the Cisco WebEx WRF Player 26.x before 26.49.32 (aka T26SP49EP32) for…
• CVE-2009-2878 — Critical (CVSS 9.3): Heap-based buffer overflow in atas32.dll in the Cisco WebEx WRF Player 26.x before 26.49.32 (aka T26SP49EP32) for…
• CVE-2009-2876 — Critical (CVSS 9.3): Heap-based buffer overflow in atas32.dll in the Cisco WebEx WRF Player 26.x before 26.49.32 (aka T26SP49EP32) for…
• CVE-2009-2875 — Critical (CVSS 9.3): Buffer overflow in atas32.dll in the Cisco WebEx WRF Player 26.x before 26.49.32 for Windows, 27.x before 27.10.x for…
• CVE-2017-3823 — High (CVSS 8.8): An issue was discovered in the Cisco WebEx Extension before 1.0.7 on Google Chrome, the ActiveTouch General Plugin…

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