CVE-2016-7044
The unformat_24bit_color function in the format parsing code in Irssi before 0.8.20, when...
The unformat_24bit_color function in the format parsing code in Irssi before 0.8.20, when compiled with true-color enabled, allows remote attackers to cause a denial of service (heap corruption and crash) via an incomplete 24bit color code.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
The unformat_24bit_color function in the format parsing code in Irssi before 0.8.20, when compiled with true-color enabled, allows remote attackers to cause a denial of service (heap corruption and crash) via an incomplete 24bit color code.
- Record
CVE-2016-7044- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-119
- Updated
- 2026-11-02
CVE List No score
The unformat_24bit_color function in the format parsing code in Irssi before 0.8.20, when compiled with true-color enabled, allows remote attackers to cause a denial of service (heap corruption and crash) via an incomplete 24bit color code.
- Record
CVE-2016-7044- Updated
- 2026-11-02
EUVDEUVD-2016-7926 No score
The unformat_24bit_color function in the format parsing code in Irssi before 0.8.20, when compiled with true-color enabled, allows remote attackers to cause a denial of service (heap corruption and crash) via an incomplete 24bit color code.
- Record
EUVD-2016-7926- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-pcc5-fpf6-mmhc
The unformat_24bit_color function in the format parsing code in Irssi before 0.8.20, when...
The unformat_24bit_color function in the format parsing code in Irssi before 0.8.20, when compiled with true-color enabled, allows remote attackers to cause a denial of service (heap corruption and crash) via an incomplete 24bit color code.
- Record
GHSA-pcc5-fpf6-mmhc- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-119
- Updated
- 2026-11-02
OSVALPINE-CVE-2016-7044
The unformat_24bit_color function in the format parsing code in Irssi before 0.8.20, when compiled with true-color enabled, allows remote attackers to cause a denial of service (heap corruption and crash) via an incomplete 24bit color code.
- Record
ALPINE-CVE-2016-7044- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSV
The unformat_24bit_color function in the format parsing code in Irssi before 0.8.20, when compiled with true-color enabled, allows remote attackers to cause a denial of service (heap corruption and crash) via an incomplete 24bit color code.
- Record
CVE-2016-7044- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Show 6 moreShow less
OSVDEBIAN-CVE-2016-7044
The unformat_24bit_color function in the format parsing code in Irssi before 0.8.20, when compiled with true-color enabled, allows remote attackers to cause a denial of service (heap corruption and crash) via an incomplete 24bit color code.
- Record
DEBIAN-CVE-2016-7044- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2016-7044
The unformat_24bit_color function in the format parsing code in Irssi before 0.8.20, when compiled with true-color enabled, allows remote attackers to cause a denial of service (heap corruption and crash) via an incomplete 24bit color code.
- Record
UBUNTU-CVE-2016-7044- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVopenSUSE-SU-2016:2524-1 No score
Security update for irssi
The IRC client irssi was updated to 0.8.20, fixing various bugs and security issues.
- CVE-2016-7044: The unformat_24bit_color function in the format parsing code in Irssi, when compiled with true-color enabled, allowed remote attackers to cause a denial of service (heap corruption and crash) via an incomplete 24bit color code.
- CVE-2016-7045: The format_send_to_gui function in the format parsing code in Irssi allowed remote attackers to cause a denial of service (heap corruption and crash) via vectors involving the length of a string.
See https://irssi.org/security/irssi_sa_2016.txt for more details.
- CVE-2016-7553: A information disclosure vulnerability in irssi buf.pl
See https://irssi.org/2016/09/22/buf.pl-update/ for more information.
- Record
openSUSE-SU-2016:2524-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10455-1 No score
irssi-0.8.20-3.1 on GA media
These are all security issues fixed in the irssi-0.8.20-3.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10455-1- Updated
- 2026-11-02
OSVSUSE-SU-2016:2524-1 No score
Security update for irssi
The IRC client irssi was updated to 0.8.20, fixing various bugs and security issues.
- CVE-2016-7044: The unformat_24bit_color function in the format parsing code in Irssi, when compiled with true-color enabled, allowed remote attackers to cause a denial of service (heap corruption and crash) via an incomplete 24bit color code.
- CVE-2016-7045: The format_send_to_gui function in the format parsing code in Irssi allowed remote attackers to cause a denial of service (heap corruption and crash) via vectors involving the length of a string.
See https://irssi.org/security/irssi_sa_2016.txt for more details.
- CVE-2016-7553: A information disclosure vulnerability in irssi buf.pl
See https://irssi.org/2016/09/22/buf.pl-update/ for more information.
- Record
SUSE-SU-2016:2524-1- Updated
- 2026-11-02
OSVUSN-3086-1 No score
irssi vulnerabilities
Gabriel Campana and Adrien Guinet discovered that the format parsing code in Irssi did not properly verify 24bit color codes. A remote attacker could use this to cause a denial of service (application crash). (CVE-2016-7044)
Gabriel Campana and Adrien Guinet discovered that a buffer overflow existed in the format parsing code in Irssi. A remote attacker could use this to cause a denial of service (application crash). (CVE-2016-7045)
- Record
USN-3086-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
irssiAlpine:v3.2 |
before 0.8.20-r0 | 0.8.20-r0 |
irssiAlpine:v3.3 |
before 0.8.20-r0 | 0.8.20-r0 |
irssiDebian:12 |
before 0.8.20-1 | 0.8.20-1 |
irssiDebian:13 |
before 0.8.20-1 | 0.8.20-1 |
irssiDebian:14 |
before 0.8.20-1 | 0.8.20-1 |
irssiDebian:8 |
before 0.8.17-1+deb8u1, plus listed versions 0.8.17-10.8.17-1+deb8u1~bpo70+1 |
0.8.17-1+deb8u1 |
irssiSUSE:Package Hub 12 |
before 0.8.20-9.1 | 0.8.20-9.1 |
irssiUbuntu:16.04:LTS |
before 0.8.19-1ubuntu1.2, plus listed versions 0.8.17-1ubuntu10.8.17-1ubuntu20.8.18-1ubuntu10.8.19-1ubuntu1 |
0.8.19-1ubuntu1.2 |
irssiopenSUSE:Tumbleweed |
before 0.8.20-3.1 | 0.8.20-3.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2016-7044 is a high vulnerability (CVSS 7.5) in Irssi, published September 21, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.71%, the 91st percentile. Fixed in irssi 0.8.20-r0.
References
debian.org/security/2016/dsa-3672
irssi.org/security/irssi_sa_2016.txt
securitytracker.com/id/1036868
ubuntu.com/usn/USN-3086-1
nvd.nist.gov/vuln/detail/CVE-2016-7044
github.com/advisories/GHSA-pcc5-fpf6-mmhc
Show 16 moreShow less
security.alpinelinux.org/vuln/CVE-2016-7044
security-tracker.debian.org/tracker/CVE-2016-7044
suse.com/support/update/announcement/2016/suse-su-20162524-1
bugzilla.suse.com/1001215
ubuntu.com/security/CVE-2016-7044
cve.org/CVERecord?id=CVE-2016-7044