CVE-2012-10053PoC

LOWCVSS 9.3 · CRITICAL

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft
  • Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

Simple Web Server 2.2 rc2 contains a stack-based buffer overflow vulnerability in its handling of the Connection HTTP header. When a remote attacker sends an overly long string in this header, the server uses vsprintf() without proper bounds checking, leading to a buffer overflow on the stack. This flaw allows remote attackers to execute arbitrary code with the privileges of the web server process. The vulnerability is triggered before authentication.

1.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-121

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Threat summary

  • Public PoC is present in monitored signal
  • 1 mentions across 1 observed day

What's happening

  • PoC mentioned or linked in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-04-07: 1PoC Mentioned / Linked · 2026-04-07: 1Technical Details · 2026-04-07: 104-07
Signal classification1 categories
PoC
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • 0day Signal@0dayPublishing
    PoC

    🚨 CVE-2012-10053: Simple W... Pre-auth RCE via vsprintf() in Connection header - textbook stack smashing with public exploits, dead simple to weaponize #RCE #BufferOverflow. https://zerodaysignal.com/vulnerability/CVE-2012-10053 #netsec #vulnerability #CVE #sysadmin #zeroday

    Post summary

    The post announces a pre‑authentication RCE in CVE‑2012‑10053 via vsprintf() stack smashing, cites publicly available exploits, and includes a link to a vulnerability detail page.

    0000042
    204 followersView on X

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