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CVE-2006-4573

12
FAUCET Score

CVE-2006-4573 describes multiple unspecified vulnerabilities in the utf8_handle_comb function of GNU screen versions prior to 4.0.3. These flaws allow user-assisted attackers to trigger a denial of service (crash or hang) through specially crafted UTF8 sequences. With a CVSS score of 2.6, this vulnerability has a network attack vector and high access complexity, leading to a partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.0.2CPE matchmatch criteria
cpe:2.3:a:gnu:screen:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.6LOW

AV:N/AC:H/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.17%
Probability of exploitation in next 30 days
EPSS Percentile
80.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0217 is in the 76th percentile among its peer group of 1,505 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: screen

Vendor Advisories (1)

redhatCVE-2006-4573Low

screen buffer overflow

Oct 23, 2006

References

docs.info.apple.com / article.html
lists.apple.com / archives/security-announce/2007/May/msg00004.html
lists.gnu.org / archive/html/screen-users/2006-10/msg00028.html
Patch
secunia.com / advisories/22573
secunia.com / advisories/22583
secunia.com / advisories/22611
secunia.com / advisories/22647
secunia.com / advisories/22649
secunia.com / advisories/22707
secunia.com / advisories/22726
secunia.com / advisories/25402
security.gentoo.org / glsa/glsa-200611-01.xml
issues.rpath.com / browse/RPL-734
slackware.com / security/viewer.php
debian.org / security/2006/dsa-1202
mandriva.com / security/advisories
openpkg.org / security/advisories/OpenPKG-SA-2006.026-screen.html
securityfocus.com / bid/20727
ubuntu.com / usn/usn-370-1
vupen.com / english/advisories/2006/4189
vupen.com / english/advisories/2007/1939