TI-2020-13478 Aliases CVE-2020-18831 GHSA-xwp4-phw7-5mfh

Buffer Overflow vulnerability in tEXtToDataBuf function in pngimage.cpp in Exiv2 0.27.1…

HIGH 69CWE-787Published 2023-08-22 · Updated 2024-10-04

Key facts

Attack vector: Local
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

Buffer Overflow vulnerability in tEXtToDataBuf function in pngimage.cpp in Exiv2 0.27.1 allows remote attackers to cause a denial of service and other unspecified impacts via use of crafted file.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00801 56th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:exiv2:exiv2:0.27.1:::::::*	0.27.1	Vulnerable	Exiv2

cpe:2.3:a:exiv2:exiv2:0.27.1:*:*:*:*:*:*:* Versions 0.27.1 Vulnerable ·Exiv2

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-18831
2026-10-03 Alias added: GHSA-xwp4-phw7-5mfh

References

Exploit 1

https://github.com/Exiv2/exiv2/issues/828

Other 1

https://www.exiv2.org/download.html

TI-2025-19560 Use After Free in Exiv2 CVSS 4.0MEDIUM 5.3
TI-2020-13491 An uncontrolled memory allocation in DataBufdata(subBox.length-sizeof(box)) function of… CVSS 3.1MEDIUM 6.5
TI-2018-08245 Exiv2 0.26 has a heap-based buffer overflow in getData in preview.cpp. CVSS 3.0CRITICAL 9.8
TI-2025-33923 Exiv2 Segmentation Faults in Exiv2::EpsImage::writeMetadata() via crafted EPS file CVSS 4.0LOW 1.8
TI-2019-06608 An issue was discovered in Exiv2 0.27. CVSS 3.0HIGH 8.8
TI-2019-06607 An issue was discovered in Exiv2 0.27. CVSS 3.0HIGH 8.8

See all 123 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences