CVE-2018-7053

An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. There is a use-after-free when SASL messages are received in an unexpected order.

Published: 2018-02-15 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-7053 is rated High Risk (67.2/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.19%). High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-7053

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-27 0.82% 1.19% +0.36%
2 2025-11-21 1.19% 0.82% -0.36%
3 2025-11-18 — 1.19% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-7053

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2018-7053

OS Trackers for CVE-2018-7053

vendor priority summary link
alpine critical CVE-2018-7053: 1 source package rows (irssi); 23 state rows across 11 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community, edge-main); fixed 11, open 12. https://security.alpinelinux.org/vuln/CVE-2018-7053
debian not yet assigned CVE-2018-7053 not yet assigned priority: Debian including 1 source packages (irssi), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-7053
redhat low — https://access.redhat.com/security/cve/CVE-2018-7053
ubuntu medium CVE-2018-7053 medium priority: Ubuntu including 1 source packages (irssi), 4 status rows across 4 suites (artful, trusty, upstream, xenial): released 3, DNE 1. https://ubuntu.com/security/CVE-2018-7053

Affected software / configurations for CVE-2018-7053

Vendor Product Version Raw CPE
irssi irssi < 1.0.7 cpe:2.3:a:irssi:irssi:*:*:*:*:*:*:*:*
irssi irssi 1.1.0 cpe:2.3:a:irssi:irssi:1.1.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 17.10 cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*

References for CVE-2018-7053

URL Tags
http://openwall.com/lists/oss-security/2018/02/15/1 Mailing List Third Party Advisory
https://irssi.org/security/irssi_sa_2018_02.txt Mitigation Vendor Advisory
https://usn.ubuntu.com/3590-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4162 Third Party Advisory
cvelogic Threat Intelligence