Cisco IOS 12.1 through 12.4, when Cisco Unified Communications Manager Express (CME) or Cisco Unified Survivable Remote Site Telephony (SRST) is enabled, allows remote attackers to cause a denial of service (device reload) via a malformed Skinny Client Control Protocol (SCCP) message, aka Bug ID CSCsz49741, the SCCP Request Handling Denial of Service Vulnerability.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ios | Cisco | 12.1yd (including) | 12.1yd (including) |
| Ios | Cisco | 12.1ye (including) | 12.1ye (including) |
| Ios | Cisco | 12.1yi (including) | 12.1yi (including) |
| Ios | Cisco | 12.2b (including) | 12.2b (including) |
| Ios | Cisco | 12.2bx (including) | 12.2bx (including) |
| Ios | Cisco | 12.2by (including) | 12.2by (including) |
| Ios | Cisco | 12.2mc (including) | 12.2mc (including) |
| Ios | Cisco | 12.2t (including) | 12.2t (including) |
| Ios | Cisco | 12.2tpc (including) | 12.2tpc (including) |
| Ios | Cisco | 12.2xb (including) | 12.2xb (including) |
| Ios | Cisco | 12.2xg (including) | 12.2xg (including) |
| Ios | Cisco | 12.2xm (including) | 12.2xm (including) |
| Ios | Cisco | 12.2xt (including) | 12.2xt (including) |
| Ios | Cisco | 12.2xu (including) | 12.2xu (including) |
| Ios | Cisco | 12.2xw (including) | 12.2xw (including) |
| Ios | Cisco | 12.2ya (including) | 12.2ya (including) |
| Ios | Cisco | 12.2yb (including) | 12.2yb (including) |
| Ios | Cisco | 12.2yc (including) | 12.2yc (including) |
| Ios | Cisco | 12.2yd (including) | 12.2yd (including) |
| Ios | Cisco | 12.2yh (including) | 12.2yh (including) |
| Ios | Cisco | 12.2yj (including) | 12.2yj (including) |
| Ios | Cisco | 12.2yl (including) | 12.2yl (including) |
| Ios | Cisco | 12.2ym (including) | 12.2ym (including) |
| Ios | Cisco | 12.2yn (including) | 12.2yn (including) |
| Ios | Cisco | 12.2yt (including) | 12.2yt (including) |
| Ios | Cisco | 12.2yu (including) | 12.2yu (including) |
| Ios | Cisco | 12.2yv (including) | 12.2yv (including) |
| Ios | Cisco | 12.2yw (including) | 12.2yw (including) |
| Ios | Cisco | 12.2yy (including) | 12.2yy (including) |
| Ios | Cisco | 12.2zb (including) | 12.2zb (including) |
| Ios | Cisco | 12.2zc (including) | 12.2zc (including) |
| Ios | Cisco | 12.2zd (including) | 12.2zd (including) |
| Ios | Cisco | 12.2ze (including) | 12.2ze (including) |
| Ios | Cisco | 12.2zf (including) | 12.2zf (including) |
| Ios | Cisco | 12.2zh (including) | 12.2zh (including) |
| Ios | Cisco | 12.2zj (including) | 12.2zj (including) |
| Ios | Cisco | 12.2zl (including) | 12.2zl (including) |
| Ios | Cisco | 12.2zp (including) | 12.2zp (including) |
| Ios | Cisco | 12.3 (including) | 12.3 (including) |
| Ios | Cisco | 12.3b (including) | 12.3b (including) |
| Ios | Cisco | 12.3jk (including) | 12.3jk (including) |
| Ios | Cisco | 12.3t (including) | 12.3t (including) |
| Ios | Cisco | 12.3tpc (including) | 12.3tpc (including) |
| Ios | Cisco | 12.3xa (including) | 12.3xa (including) |
| Ios | Cisco | 12.3xb (including) | 12.3xb (including) |
| Ios | Cisco | 12.3xc (including) | 12.3xc (including) |
| Ios | Cisco | 12.3xd (including) | 12.3xd (including) |
| Ios | Cisco | 12.3xe (including) | 12.3xe (including) |
| Ios | Cisco | 12.3xf (including) | 12.3xf (including) |
| Ios | Cisco | 12.3xg (including) | 12.3xg (including) |
| Ios | Cisco | 12.3xi (including) | 12.3xi (including) |
| Ios | Cisco | 12.3xj (including) | 12.3xj (including) |
| Ios | Cisco | 12.3xk (including) | 12.3xk (including) |
| Ios | Cisco | 12.3xl (including) | 12.3xl (including) |
| Ios | Cisco | 12.3xq (including) | 12.3xq (including) |
| Ios | Cisco | 12.3xr (including) | 12.3xr (including) |
| Ios | Cisco | 12.3xu (including) | 12.3xu (including) |
| Ios | Cisco | 12.3xw (including) | 12.3xw (including) |
| Ios | Cisco | 12.3xx (including) | 12.3xx (including) |
| Ios | Cisco | 12.3xy (including) | 12.3xy (including) |
| Ios | Cisco | 12.3xz (including) | 12.3xz (including) |
| Ios | Cisco | 12.3yf (including) | 12.3yf (including) |
| Ios | Cisco | 12.3yg (including) | 12.3yg (including) |
| Ios | Cisco | 12.3yk (including) | 12.3yk (including) |
| Ios | Cisco | 12.3ym (including) | 12.3ym (including) |
| Ios | Cisco | 12.3yq (including) | 12.3yq (including) |
| Ios | Cisco | 12.3ys (including) | 12.3ys (including) |
| Ios | Cisco | 12.3yt (including) | 12.3yt (including) |
| Ios | Cisco | 12.3yu (including) | 12.3yu (including) |
| Ios | Cisco | 12.3yx (including) | 12.3yx (including) |
| Ios | Cisco | 12.3yz (including) | 12.3yz (including) |
| Ios | Cisco | 12.3za (including) | 12.3za (including) |
| Ios | Cisco | 12.4 (including) | 12.4 (including) |
| Ios | Cisco | 12.4gc (including) | 12.4gc (including) |
| Ios | Cisco | 12.4mr (including) | 12.4mr (including) |
| Ios | Cisco | 12.4t (including) | 12.4t (including) |
| Ios | Cisco | 12.4xa (including) | 12.4xa (including) |
| Ios | Cisco | 12.4xb (including) | 12.4xb (including) |
| Ios | Cisco | 12.4xc (including) | 12.4xc (including) |
| Ios | Cisco | 12.4xd (including) | 12.4xd (including) |
| Ios | Cisco | 12.4xe (including) | 12.4xe (including) |
| Ios | Cisco | 12.4xg (including) | 12.4xg (including) |
| Ios | Cisco | 12.4xj (including) | 12.4xj (including) |
| Ios | Cisco | 12.4xl (including) | 12.4xl (including) |
| Ios | Cisco | 12.4xm (including) | 12.4xm (including) |
| Ios | Cisco | 12.4xp (including) | 12.4xp (including) |
| Ios | Cisco | 12.4xt (including) | 12.4xt (including) |
| Ios | Cisco | 12.4xv (including) | 12.4xv (including) |
| Ios | Cisco | 12.4xw (including) | 12.4xw (including) |
| Ios | Cisco | 12.4xy (including) | 12.4xy (including) |
| Ios | Cisco | 12.4xz (including) | 12.4xz (including) |
| Ios | Cisco | 12.4ya (including) | 12.4ya (including) |
| Ios | Cisco | 12.4yb (including) | 12.4yb (including) |