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CVE-2018-7053

32
FAUCET Score

CVE-2018-7053 describes a critical use-after-free vulnerability in Irssi versions prior to 1.0.7 and 1.1.1, affecting various distributions including Canonical and Debian. This flaw arises when SASL messages are processed out of sequence. With a CVSS score of 9.8 (CRITICAL), it presents a severe risk, allowing unauthenticated attackers to achieve high confidentiality, integrity, and availability impacts over the network with low attack complexity. Despite its high severity and significant community discussion (10 mentions), there is currently no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.7CPE matchmatch criteria
cpe:2.3:a:irssi:irssi:*:*:*:*:*:*:*:*
1.1.0CPE matchmatch criteria
cpe:2.3:a:irssi:irssi:1.1.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.40%
Probability of exploitation in next 30 days
EPSS Percentile
82.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0240 is in the 72nd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2018-7053Low

irssi: use-after-free when SASL messages are received in unexpected order

Feb 13, 2018

References

openwall.com / lists/oss-security/2018/02/15/1
Mailing ListThird Party Advisory
irssi.org / security/irssi_sa_2018_02.txt
MitigationVendor Advisory
usn.ubuntu.com / 3590-1
Third Party Advisory
debian.org / security/2018/dsa-4162
Third Party Advisory