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Fencer Intel
critical 10.0

CVE-2011-5124 in the critical feed json

Stack-based buffer overflow in the BCAAA component before build 60258, as used by Blue Coat ProxySG 4.2.3 through 6.1 and ProxyOne, allows…

published 2012-08-26 14 y ago modified 2026-06-16 4 mo ago also EUVD-2011-5024

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
54.6%
EPSS 54.6% chance of exploitation in 30 days, percentile 99%
public exploits
2
Metasploit, Exploit-DB

Summary

Stack-based buffer overflow in the BCAAA component before build 60258, as used by Blue Coat ProxySG 4.2.3 through 6.1 and ProxyOne, allows remote attackers to execute arbitrary code via a large packet to the synchronization port (16102/tcp).

Timeline

  1. First public exploit (Metasploit exploit/windows/misc/bcaaa_bof)
  2. Published

Exploit prediction

54.65% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Metasploit exploit/windows/misc/bcaaa_bof Blue Coat Authentication and Authorization Agent (BCAAA) 5 Buffer Overflow metasploit exploit, good rank, 2011-04-04
  • EDB-17513 Blue Coat Authentication and Authorization Agent (BCAAA) 5 - Remote Buffer Overflow (Metasploit) remote, 2011-07-09

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.