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CVE mentions, exploit signals, and PoC evidence in one fast public view.

CVE detail

CVE-2020-3556

A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client Software could allow an authenticated, local attacker to cause a targeted AnyConnect user to execute a malicious script. The vulnerability is due to a lack of authentication to the IPC listener. An attacker could exploit this vulnerability by sending crafted IPC messages to the AnyConnect client IPC listener. A successful exploit could allow an attacker to cause the targeted AnyConnect user to execute a script. This script would execute with the privileges of the targeted AnyConnect user. In order to successfully exploit this vulnerability, there must be an ongoing AnyConnect session by the targeted user at the time of the attack. To exploit this vulnerability, the attacker would also need valid user credentials on the system upon which the AnyConnect client is being run. Cisco has not released software updates that address this vulnerability.

CVSS 7.3 · HighBuzz score 29.4

Buzz score

Why this CVE is surfacing

Buzz score total 29.4

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 17.9 · diversity 11.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
17.9
5 evidence mentions in the snapshot
Diversity score
11.5
3 sources across 2 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
5 source links · newest first
  • Cisco Patches Code Execution Flaw in VPN Product 6 Months After DisclosureSecurityWeek

    Cisco this week announced the availability of patches for a high-severity vulnerability in AnyConnect Secure Mobility Client that could be exploited for code execution.

    newswww.securityweek.comMay 14, 2021, 1:29 PM
  • Cisco fixes AnyConnect Client VPN zero-day disclosed in NovemberSecurity Affairs

    Cisco has addressed a zero-day in the Cisco AnyConnect Secure Mobility Client VPN software, with publicly available proof-of-concept exploit code. Cisco has addressed a zero-day vulnerability in Cisco AnyConnect Secure Mobility Client, tracked as CVE-2020-3556, that was disclosed in November. The availability of a proof-of-concept exploit code for the zero-day was confirmed by the Cisco Product Security […]

    newssecurityaffairs.comMay 13, 2021, 3:53 PM
  • 9th November – Threat Intelligence BulletinCheck Point Research

    For the latest discoveries in cyber research for the week of 9th November, please download our Threat Intelligence Bulletin. Top Attacks and Breaches Check Point Research has alerted against a wave of ransomware attacks targeting Israeli companies and corporations, using known ransomware families such as REvil and Ryuk, as well as a new family called […]

    vendorresearch.checkpoint.comNov 9, 2020, 4:25 PM
  • Cisco Working on Patch for Code Execution Vulnerability in VPN ProductSecurityWeek

    Cisco informed customers on Wednesday that it’s working on a patch for a code execution vulnerability affecting its AnyConnect product. The company says a proof-of-concept (PoC) exploit is available. The Cisco AnyConnect Secure Mobility Client is designed to provide secure VPN access for remote workers.

    newswww.securityweek.comNov 5, 2020, 9:29 AM
  • Zero-day in Cisco AnyConnect Secure Mobility Client yet to be fixedSecurity Affairs

    Cisco disclosed a zero-day vulnerability in the Cisco AnyConnect Secure Mobility Client software and the availability of PoC exploit code. Cisco has disclosed a zero-day vulnerability, tracked as CVE-2020-3556, in the Cisco AnyConnect Secure Mobility Client software with the public availability of a proof-of-concept exploit code. The CVE-2020-3556 flaw resided in the interprocess communication (IPC) channel of Cisco AnyConnect […]

    newssecurityaffairs.comNov 4, 2020, 7:25 PM

Exploit code

Public exploit repository references

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