{"id":"CVE-2009-5039","aliases":["EUVD-2009-4997","GHSA-wp76-m554-xw7f"],"status":"published","title":"Memory leak in the gk_circuit_info_do_in_acf function in the H.323 implementation in Cisco IOS...","description":"Memory leak in the gk_circuit_info_do_in_acf function in the H.323 implementation in Cisco IOS before 15.0(1)XA allows remote attackers to cause a denial of service (memory consumption) via a large number of calls over a long duration, as demonstrated by InterZone Clear Token (IZCT) test traffic, aka Bug ID CSCsz72535.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01296,"percentile":0.70542,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-772"],"published":"2011-01-07T18:00:00Z","modified":"2026-06-16T23:14:52Z","products":[{"vendor":"cisco","product":"ios"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/64731","tags":["vdb-entry","x_refsource_XF","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www.cisco.com/en/US/docs/ios/15_0/15_0x/15_01_XA/rn800xa.pdf","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-5039"},{"url":"https://github.com/advisories/GHSA-wp76-m554-xw7f"}],"sources":{"cve":[{"id":"CVE-2009-5039","description":"Memory leak in the gk_circuit_info_do_in_acf function in the H.323 implementation in Cisco IOS before 15.0(1)XA allows remote attackers to cause a denial of service (memory consumption) via a large number of calls over a long duration, as demonstrated by InterZone Clear Token (IZCT) test traffic, aka Bug ID CSCsz72535.","status":"published","published":"2011-01-07T18:00:00Z","modified":"2024-08-07T07:24:54.034Z","updated_at":"2026-11-02T14:33:23.041383Z"}],"euvd":[{"id":"EUVD-2009-4997","description":"Memory leak in the gk_circuit_info_do_in_acf function in the H.323 implementation in Cisco IOS before 15.0(1)XA allows remote attackers to cause a denial of service (memory consumption) via a large number of calls over a long duration, as demonstrated by InterZone Clear Token (IZCT) test traffic, aka Bug ID CSCsz72535.","status":"published","published":"2011-01-07T18:00:00Z","modified":"2024-08-07T07:24:54Z","updated_at":"2026-11-03T01:39:08.21747Z"}],"ghsa":[{"id":"GHSA-wp76-m554-xw7f","title":"Memory leak in the gk_circuit_info_do_in_acf function in the H.323 implementation in Cisco IOS...","description":"Memory leak in the gk_circuit_info_do_in_acf function in the H.323 implementation in Cisco IOS before 15.0(1)XA allows remote attackers to cause a denial of service (memory consumption) via a large number of calls over a long duration, as demonstrated by InterZone Clear Token (IZCT) test traffic, aka Bug ID CSCsz72535.","status":"published","published":"2022-05-02T04:00:46Z","modified":"2023-01-31T05:09:23Z","cwes":["CWE-772"],"updated_at":"2026-11-02T14:49:30.8182Z"}],"nvd":[{"id":"CVE-2009-5039","description":"Memory leak in the gk_circuit_info_do_in_acf function in the H.323 implementation in Cisco IOS before 15.0(1)XA allows remote attackers to cause a denial of service (memory consumption) via a large number of calls over a long duration, as demonstrated by InterZone Clear Token (IZCT) test traffic, aka Bug ID CSCsz72535.","status":"published","published":"2011-01-07T19:00:16.89Z","modified":"2026-06-16T23:14:52.773Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-772"],"updated_at":"2026-11-02T14:01:38.684719Z"}]}}