CVE-2020-18773
An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers...
An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers to cause a denial of service (DOS) via a crafted tif file.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers to cause a denial of service (DOS) via a crafted tif file.
- Record
CVE-2020-18773- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:N/A:P - Weakness
- CWE-787
- Updated
- 2026-11-02
CVE List No score
An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers to cause a denial of service (DOS) via a crafted tif file.
- Record
CVE-2020-18773- Updated
- 2026-11-02
EUVDEUVD-2021-0076 No score
An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers to cause a denial of service (DOS) via a crafted tif file.
- Record
EUVD-2021-0076- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-v3cf-r46q-8rgm
An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers...
An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers to cause a denial of service (DOS) via a crafted tif file.
- Record
GHSA-v3cf-r46q-8rgm- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-119, CWE-787
- Updated
- 2026-11-02
OSV
An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers to cause a denial of service (DOS) via a crafted tif file.
- Record
CVE-2020-18773- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2020-18773
An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers to cause a denial of service (DOS) via a crafted tif file.
- Record
DEBIAN-CVE-2020-18773- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVPYSEC-2021-883
An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers to cause a denial of service (DOS) via a crafted tif file.
- Record
PYSEC-2021-883- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-18773
An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers to cause a denial of service (DOS) via a crafted tif file.
- Record
UBUNTU-CVE-2020-18773- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
exiv2Debian:12 |
All versions, plus listed versions 0.27.6-10.28.0+dfsg-10.28.0+dfsg-20.28.0+dfsg-30.28.0+dfsg-4 Show 13 moreShow less0.28.1+dfsg-10.28.1+dfsg-20.28.1+dfsg-30.28.2+dfsg-10.28.3+dfsg-10.28.3+dfsg-20.28.4+dfsg-10.28.4+dfsg-20.28.5+dfsg-10.28.7+dfsg-10.28.7+dfsg-20.28.8+dfsg-10.28.9+dfsg-1 |
None known |
exiv2Debian:13 |
All versions, plus listed versions 0.28.5+dfsg-10.28.7+dfsg-10.28.7+dfsg-20.28.8+dfsg-10.28.9+dfsg-1 |
None known |
exiv2Debian:14 |
All versions, plus listed versions 0.28.5+dfsg-10.28.7+dfsg-10.28.7+dfsg-20.28.8+dfsg-10.28.9+dfsg-1 |
None known |
exiv2Ubuntu:Pro:16.04:LTS |
All versions, plus listed versions 0.25-1ubuntu10.25-2.10.25-2.1ubuntu16.04.10.25-2.1ubuntu16.04.20.25-2.1ubuntu16.04.3 Show 8 moreShow less0.25-2.1ubuntu16.04.40.25-2.1ubuntu16.04.50.25-2.1ubuntu16.04.60.25-2.1ubuntu16.04.7+esm10.25-2.1ubuntu16.04.7+esm20.25-2.1ubuntu16.04.7+esm30.25-2.1ubuntu16.04.7+esm40.25-2.1ubuntu16.04.7+esm5 |
None known |
exiv2Ubuntu:Pro:18.04:LTS |
All versions, plus listed versions 0.25-3.10.25-3.1ubuntu0.18.04.10.25-3.1ubuntu0.18.04.20.25-3.1ubuntu0.18.04.30.25-3.1ubuntu0.18.04.4 Show 6 moreShow less0.25-3.1ubuntu0.18.04.50.25-3.1ubuntu0.18.04.70.25-3.1ubuntu0.18.04.90.25-3.1ubuntu0.18.04.100.25-3.1ubuntu0.18.04.110.25-3.1ubuntu0.18.04.11+esm1 |
None known |
exiv2Ubuntu:Pro:20.04:LTS |
All versions, plus listed versions 0.25-4ubuntu20.25-4ubuntu30.27.2-8ubuntu20.27.2-8ubuntu2.20.27.2-8ubuntu2.4 Show 5 moreShow less0.27.2-8ubuntu2.50.27.2-8ubuntu2.60.27.2-8ubuntu2.70.27.2-8ubuntu2.7+esm10.27.2-8ubuntu2.7+esm3 |
None known |
exiv2Ubuntu:22.04:LTS |
All versions, plus listed versions 0.27.3-3ubuntu40.27.3-3.1ubuntu10.27.5-1ubuntu10.27.5-3ubuntu10.27.5-3ubuntu1.10.27.5-3ubuntu1.3 |
None known |
exiv2Ubuntu:24.04:LTS |
All versions, plus listed versions 0.27.6-10.27.6-1build10.27.6-1ubuntu0.10.27.6-1ubuntu0.3 |
None known |
exiv2Ubuntu:25.10 |
All versions, plus listed versions 0.28.5+dfsg-10.28.5+dfsg-1ubuntu0.10.28.5+dfsg-1ubuntu0.3 |
None known |
exiv2Ubuntu:26.10 |
All versions, plus listed versions 0.28.8+dfsg-1 |
None known |
exiv2Ubuntu:26.04:LTS |
All versions, plus listed versions 0.28.5+dfsg-10.28.7+dfsg-20.28.8+dfsg-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| affected, aliases, references | EUVD | |
| first indexed | OSV | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-18773 is a medium vulnerability (CVSS 6.5) in Exiv2, published August 23, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.33%, the 71st percentile. No source names a fixed version.